MIND Diet

Written by James Peth, MS, MPH, PhD

Diet Reference Archive: eating pattern

MIND Diet

The MIND diet is an eating pattern that blends parts of the Mediterranean and DASH diets and gives particular weight to green leafy vegetables, berries, nuts, beans, whole grains, fish, poultry and olive oil. Researchers designed it to test whether the way older adults eat could slow the decline in memory and thinking that comes with age and lower the risk of Alzheimer's disease.

Family: Guideline-endorsed and evidence-based dietary patterns Promoted by: the researchers who created it with the Rush Memory and Aging Project in Chicago, and who later tested it in a trial First appeared: 2015, when its diet score was published GRADE certainty of evidence, this page's own judgment: Moderate that, in the one large trial, it did not demonstrate an advantage in cognition over a calorie-reduced usual diet over 3 years, though a small benefit cannot be ruled out. Low for the link with lower dementia risk seen in cohort studies

ON THIS PAGE

  1. In brief
  2. Overview
  3. In practice
  4. For the coach
  5. The evidence (opens on request)
  6. Mechanisms (opens on request)
  7. Risks, contraindications and myths (opens on request)
  8. Key terms
  9. Review questions
  10. References
  11. Evidence rating and review record

The summary and sections 1 to 3 are the short version and are open when the page loads. Sections 4 to 6 hold the research detail, the biology, and the cautions. Each of those opens when you select its heading, and you can read the page without opening them. Review questions 2 and 4 draw on sections 4 and 6. Back to the Diet Reference Archive index.

In brief

What is it? A way of eating built around vegetables, especially leafy greens, plus berries, nuts, beans, whole grains, fish, poultry and olive oil, with limits on red meat, butter, cheese, sweets and fried or fast food. Its name stands for the Mediterranean-DASH Intervention for Neurodegenerative Delay.

Does it work? In studies that followed middle-aged and older adults for several years, people whose usual diets scored highest on the MIND scale were diagnosed with dementia less often than people whose diets scored lowest. Those studies show an association, not cause and effect. When the diet was tested in a 3-year trial of 604 older adults with a family history of dementia, it was compared with each person's usual diet, and both groups were asked to cut about 250 calories a day. Memory and thinking test scores rose a little in both groups. The trial did not demonstrate an advantage for the MIND diet over its comparison diet; the result was compatible both with no effect and with a small benefit. No clear difference between the groups was detected on brain scans. The trials identified for this page do not establish whether the MIND diet prevents dementia itself.

Is it safe? For most adults, yes. It is made of ordinary foods, and in the large trial, side effects were no more common on the MIND diet than on the comparison diet. Two cautions come up most often. The original scoring system gave full credit for 1 glass of wine a day, but the trial dropped wine for safety, and current guidance says a person who does not drink should not start. And the diet asks for leafy greens most days, which matters for anyone taking warfarin.

Who should not do it without talking to a doctor or dietitian first? People taking warfarin; people with kidney disease who have been told to limit potassium or who are on dialysis; people with a nut or fish allergy; anyone thinking of adding wine; and anyone whose memory or thinking has changed, who needs a medical evaluation rather than a diet.

Related pages: Mediterranean Diet, DASH Diet and Anti-Inflammatory Diet. Full list on the archive index.

1. Overview

What you eat

The MIND diet is defined by a score. Each of 15 food groups earns 0, half a point, or 1 point depending on how often a person eats it, for a total from 0 to 15. Of the 15, 10 food groups count toward the score and are sometimes called brain-healthy, and 5 count against it. The full point for each healthy group goes to a person who eats, on average:

  • green leafy vegetables, such as spinach, kale, collards or salad greens, 6 or more servings a week;
  • other vegetables, at least 1 serving a day;
  • berries, 2 or more servings a week;
  • nuts, 5 or more servings a week;
  • beans, lentils or soybeans, more than 3 meals a week;
  • whole grains, 3 or more servings a day;
  • fish that is not fried, at least 1 meal a week;
  • poultry that is not fried, 2 or more meals a week;
  • olive oil as the main oil used at home;
  • and wine, 1 glass a day. This is part of the original 2015 score and is not a recommendation to start drinking; section 6 explains why.

Some things are missing on purpose. The score gives no points for fruit other than berries, for dairy foods, or for potatoes, and 1 fish meal a week earns full credit. That makes the MIND diet ask for less than the Mediterranean or DASH scoring systems do in several places.

The score was built to measure what people already eat. When researchers turned it into a diet for a trial, they set targets instead: for example, half a cup to a cup of leafy greens a day, half a cup of berries 5 times a week, 5 ounces of nuts a week, and 2 tablespoons of extra virgin olive oil a day. The trial version left wine out entirely, so its highest possible score was 14.

A list of MIND foods that a client brings in may be shorter than the score, for example without poultry or wine. The list on this page is the original score's.

What you avoid or limit

The 5 food groups that count against the score are red meat and meat products, butter and stick margarine, cheese, pastries and sweets, and fried or fast food. The full point for each goes to a person who eats red meat fewer than 4 times a week, less than 1 tablespoon of butter or stick margarine a day, cheese less than once a week, pastries and sweets fewer than 5 times a week, and fried or fast food less than once a week. In the original score these are thresholds for scoring, not rules, and a person can miss several of them and still have a moderate score. The trial set somewhat stricter targets, such as no more than 3 servings of red and processed meat a week.

Where it came from

The MIND diet was devised by Martha Clare Morris and colleagues, working with the Rush Memory and Aging Project in Chicago, and first published in 2015. The team started from the Mediterranean and DASH diets, both of which had been studied mainly for heart health, and changed them based on reviews of research on diet and the aging brain. In the authors' account, leafy greens and berries were singled out because earlier studies had linked them with slower cognitive decline, while fruit in general had not been, and 1 fish meal a week was chosen because the studies of fish and dementia they reviewed had not detected added benefit from eating more. The authors also state that the food groups were chosen from the published literature, not from patterns in the group of people they then studied (Morris, Tangney, Wang, Sacks, Barnes, et al., 2015).

The score was first tested in the Rush Memory and Aging Project, a long-running study of older volunteers living in Chicago-area retirement communities and senior public housing (Morris, Tangney, Wang, Sacks, Bennett, & Aggarwal, 2015). Those results led to a randomized trial funded by the National Institute on Aging, which enrolled participants in Chicago and Boston from 2017 to 2018 and was published in 2023 (Barnes et al., 2023). Morris is listed as deceased on the trial report, which is dedicated to her memory as a co-creator of the diet.

What it claims to do

The MIND diet is promoted as a way to protect the brain as people age: to slow the decline in memory and thinking, and to lower the risk of Alzheimer's disease and other dementia. Its creators' first papers stated these claims with a condition attached. The second 2015 paper concluded that the findings "suggest that the MIND diet substantially slows cognitive decline with age" and, in the next sentence, that a dietary trial "would be required to verify its relevance to brain health" (Morris, Tangney, Wang, Sacks, Barnes, et al., 2015, abstract). Section 4 reports what that trial found.

What it gets right

Nearly everything the MIND diet asks for appears in mainstream heart-health guidance. The American Heart Association's 2026 scientific statement lists the features of a heart-healthy pattern, among them eating plenty of vegetables and fruits, choosing mostly whole grains, choosing healthy sources of protein, choosing unsaturated fats in place of saturated fats, and minimizing added sugars (Lichtenstein et al., 2026). The MIND diet's emphasis on leafy greens, beans, nuts, fish, poultry and olive oil, and its limits on butter, cheese, red meat and sweets, fit those features closely. With a client's permission, a coach can point out where the MIND diet overlaps with this kind of professional guidance and what the research on it does and does not show, and then explore the client's own goals and plan.

How clients describe it, and what it gets confused with

Clients may call it "the brain diet," "the Alzheimer's diet," or "the diet for memory," or may describe it by its best-known foods, such as blueberries and leafy greens. The phrases here are offered as observation, not from a study. It is most often confused with the Mediterranean diet, which is one of its 2 parents and has its own trial evidence; with the DASH diet, its other parent, which was designed to lower blood pressure; and with the anti-inflammatory diet, a label rather than a single defined diet. See the Mediterranean Diet, DASH Diet and Anti-Inflammatory Diet pages. A client who talks about "brain foods" may also mean supplements or single foods sold for memory, which are not the MIND diet.

2. In practice

A typical day of eating

A day that would earn most of the points might look like this. Breakfast is oatmeal with a handful of strawberries or blueberries and some chopped walnuts. Lunch is a salad of spinach or mixed greens with chickpeas, tomatoes and cucumber, dressed with olive oil and vinegar, with a slice of whole-grain bread. An afternoon snack is a small handful of almonds. Dinner is baked chicken or salmon with roasted broccoli and brown rice, cooked in olive oil. Water, coffee or tea go with meals. Over a week, the same person would have beans or lentils in several meals, fish at least once, poultry about twice, red meat no more than a few times, and cheese, butter, pastries and fried food rarely. The day includes no wine, and it does not need to.

Cost, products, and who profits

The searches for this page did not identify a published dollar comparison of the MIND diet's cost with a usual diet, so this page gives no figure. Cost does come up as a barrier: in a survey of 299 women who were informal caregivers of people with dementia, budget, time and transportation were the barriers they named most often (Guzman & Aguiñaga, 2024). The trial's designers treated cost as a real barrier: they supplied people in the MIND group with blueberries, mixed nuts and extra virgin olive oil to reduce the financial burden of eating the highest quality versions of those foods (Liu et al., 2021). People in the comparison group received $30 gift cards on the same schedule (Barnes et al., 2023).

No company owns the MIND diet, and following it requires no book, app, membership or supplement. Those foods did have commercial backers in the research, however. The trial's nuts, peanut butter, olive oil and blueberries were donated by the International Tree Nut Council Nutrition Research and Education Foundation, The Peanut Institute, an olive oil company and the U.S. Highbush Blueberry Council (Liu et al., 2021). The trial itself was funded by the National Institute on Aging (Barnes et al., 2023). A client may meet those foods marketed as "brain foods," and it helps to know where the association came from.

Environmental footprint

The searches for this page did not identify a usable estimate of the MIND diet's own environmental footprint. Because the score limits red meat and rewards vegetables, beans, nuts, fish and poultry, the footprint depends mostly on which foods a person chooses within it.

Cultural fit

The MIND diet was developed and first studied in the United States, and a systematic review found that its protective associations with memory and thinking came mainly from North American groups. The reviewers suggest that a diet built on specific foods may not travel well: berries are not part of every food tradition, and leafy greens are eaten very differently in different countries. Researchers outside North America have adapted the score, for example replacing berries with total polyphenol intake in a French study and replacing wine with tea in a Chinese study (van Soest et al., 2024).

What makes people stop

The searches for this page did not identify a study of why people who had followed the MIND diet stopped. What is known comes from 2 other kinds of evidence, which answer different questions. Studies of barriers to taking up the diet name everyday obstacles: 25 adults aged 40 to 55 in Northern Ireland named time, work environment, taste preferences and convenience (Timlin et al., 2021), and the caregivers' survey named budget, time and transportation (Guzman & Aguiñaga, 2024).

Trial records show how many people stayed. In the 3-year trial, 93.4 percent of participants completed the study; 8.6 percent of the MIND group and 4.6 percent of the comparison group were lost to follow-up by year 3. People in the MIND group raised their diet score by an average of 3.3 points in the first 6 months, to about 11 out of 14, and stayed near that level for the rest of the trial (Barnes et al., 2023). That was with weekly or twice-monthly calls from a trained nutrition counselor and free blueberries, nuts and olive oil. In a later analysis of the same trial, about 1 in 5 participants showed no improvement in their score (Dhana, Aggarwal, Ventrelle, et al., 2026).

Outside a trial, without that support and those foods, keeping up the same changes may be harder; that is a reasonable expectation, not a measured result.

What happens when you stop

The searches for this page did not identify a study that asked people to stop the MIND diet and followed what happened. The longest trial ran for 3 years. Within it, memory and thinking scores rose in both groups over the first year, which may partly reflect people getting better at the tests with practice, and then leveled off; the gap between the groups stayed small throughout (Barnes et al., 2023). One small trial in Hong Kong tested people again 3 months after its counseling sessions ended, and scores in its MIND group were still higher than at the start (Law et al., 2026); that shows what happened after support ended, not what happens when people stop eating this way.

Common variations

Clients may meet 3 versions. The original MIND score has 15 parts, including wine, which is part of the historical score and not a recommendation to start drinking. The version tested in the trial had 14 parts because wine was removed, and it was combined with a goal of eating about 250 fewer calories a day (Liu et al., 2021). Modified scores adapted to other countries change some parts, for example substituting tea for wine or using local serving guidelines (van Soest et al., 2024). Results from one version do not automatically apply to another.

3. For the coach

Who does what

The physician
Evaluates any concern about memory or thinking and decides what testing is needed. Reviews medications affected by a change in eating, especially warfarin, whose effect changes when vitamin K intake from leafy greens changes, and any medication that interacts with alcohol. For a client with kidney disease, decides with the kidney care team what limits on potassium, if any, apply.
The registered dietitian
Turns the diet into an individual eating plan and fits it to the person's health conditions: keeping vitamin K intake steady for someone on warfarin, working within potassium limits for someone on dialysis, finding substitutes for someone allergic to nuts or fish, and making sure the plan still supplies enough of what the person needs. In the large MIND trial, registered dietitians led the dietary counseling for both groups (Barnes et al., 2023).
The health and wellness coach
Helps the client name what is driving their interest, which is often a parent's dementia or a scare about their own memory; separates what they can act on from what they cannot; tests the diet against their values, budget, household and cooking habits; and helps them design small changes they own. The coach also holds the referral line when a worry about memory is really a medical question.

What a client bringing this diet needs

A client who asks about the MIND diet is often asking a bigger question: "Is there something I can do so that what happened to my mother does not happen to me?" What they need first is to be heard. After that, a coaching conversation can offer what a search engine cannot: a clear sense of their own reasons, an honest picture of what the evidence does and does not promise, a realistic look at how the diet fits their life, and a plan they choose. With permission, the coach can explain where the diet overlaps with professional dietary guidance and what the research on memory does and does not show, then explore the client's goals, preferences and any plan they have made with their clinicians, and hand the decision back. For a client who is frightened, fear is not a tool for motivating change; referral information and their own choice are what they need.

What to ask

  • "What got you interested in the MIND diet, and what are you hoping it will do for you?"
  • "If you were eating this way a year from now, what would be different about your days?"
  • "Which parts of it already fit how you eat, and which parts would be hardest?"

Referral red flags

Some situations call for a referral rather than a coaching conversation.

  • The client or a family member describes changes in memory or thinking that affect daily life, such as memory loss that disrupts daily routines, trouble with familiar tasks, confusion about time or place, new problems finding words, poorer judgment, withdrawal from work or social activities, or changes in mood or personality. The Alzheimer's Association advises anyone who notices these signs to schedule an appointment with a doctor (Alzheimer's Association, n.d.). The coach encourages that appointment and does not interpret the signs.
  • The client takes warfarin and plans to eat leafy greens much more often. The prescriber needs to know before the change (National Institutes of Health Office of Dietary Supplements, 2021).
  • The client has kidney disease and has been told to limit potassium, or is on dialysis (National Kidney Foundation, 2023).
  • The client plans to start drinking wine because it is on the MIND list, or is pregnant, in recovery from alcohol use, or takes medication that interacts with alcohol (U.S. Department of Agriculture & U.S. Department of Health and Human Services, 2026).
  • The client asks about supplements sold for memory or brain health. The coach does not recommend or discourage them; the question goes to the physician or pharmacist.

Special populations

Pregnancy and breastfeeding
Research here is limited and observational. One study of 178 and 174 mother-child pairs in the United States used a version of the score adapted for pregnancy and found that higher maternal scores went with better cognitive test scores in children aged 6 to 11, but not at ages 3 to 5 (Duncan et al., 2026). A survey of 350 breastfeeding mothers linked higher MIND scores with less sleep disturbance (Bahrami et al., 2025). These observational studies measured different outcomes; they do not show that the diet is adequate, safe or beneficial in pregnancy or breastfeeding. The wine component does not apply: current federal guidance names pregnant women among the people who should avoid alcohol completely (U.S. Department of Agriculture & U.S. Department of Health and Human Services, 2026). Eating during pregnancy and breastfeeding is planned with the obstetric and pediatric teams.
Children and adolescents
Research here is limited and observational. In a United States study of 8,459 children about 11 years old, higher MIND scores went with fewer depressive symptoms 2 years later (Pu et al., 2025). That is a mood outcome, not memory or dementia, and it does not show that the diet causes the difference or that it is adequate for growing children. The score was designed around aging, and any individual plan for a child is made with the child's clinician; a family eating this way can include children in the same meals.
Older adults
The population the diet was built for and tested in. Participants in the large trial were 65 to 84 years old, were overweight, had a first-degree relative with dementia, and had diets that scored low before the trial began (Barnes et al., 2023). The trial also asked people to eat about 250 fewer calories a day. That calorie reduction is not a general recommendation for older adults; individual nutrition needs, including whether weight loss is appropriate at all, belong with the physician and dietitian, and the coach does not make weight a goal.
Athletes and people with high activity
Research here is limited. A cross-sectional survey of 684 physically active adults in Iran linked higher MIND scores with lower odds of depression, and found no clear association with anxiety or sleep disturbance (Arabpour & Milajerdi, 2025). It says nothing about athletic performance or whether the diet meets the needs of heavy training. Energy and nutrient needs at high activity are individual and belong with a dietitian; the calorie reduction used in the large trial was part of that trial, not part of the diet.
People taking medication for diabetes, blood pressure, or blood thinning
Warfarin is the medication that matters most, because the diet asks for leafy greens most days and those are rich in vitamin K. People taking warfarin need to keep their vitamin K intake consistent, because sudden changes can raise or lower the drug's effect (National Institutes of Health Office of Dietary Supplements, 2021). For a client taking warfarin, insulin, a sulfonylurea or blood pressure medication, a substantial change in eating, especially one that includes eating less, is something the client keeps the prescriber informed about. A low blood sugar episode calls for immediate action under the client's own diabetes treatment plan, and severe symptoms, or an episode the person cannot manage, call for emergency help (National Institute of Diabetes and Digestive and Kidney Diseases, 2021); the client also tells the prescriber about the episode. Other new symptoms, such as dizziness, go to the clinician, who works out the cause. The coach does not diagnose the cause, devise treatment or adjust medication.
People with a history of disordered eating
A diet defined by a score and by weekly serving targets can turn into a set of rules, and the trial version paired it with calorie reduction. Counting servings of leafy greens or tracking a score is not in itself a problem; a coach notices and asks what the behavior is for, whether it causes distress, whether it narrows what the person eats, and whether it gets in the way of daily life. For a client with a history of disordered eating, any plan is made with their clinician under their existing care plan, and a real concern goes through the coach's own referral process.

Client misconceptions

Three beliefs about this diet are not supported by the evidence. The first is that the MIND diet is proven to prevent Alzheimer's disease; in fact the evidence for lower dementia risk comes from studies of people who already ate this way, and the one large trial did not demonstrate an advantage over a calorie-reduced usual diet on memory and thinking tests. The second is that the diet requires a daily glass of wine; the trial removed wine, and no health body now recommends that a non-drinker start. The third is that a single food, usually blueberries, protects memory; the diet is a pattern scored across 15 food groups, and the trial that supplied blueberries did not demonstrate an advantage for the MIND group over the comparison group. Section 6 gives each with its origin.

4. The evidence

(select the heading to open or close this section)

The MIND diet's evidence has 2 layers that point in different directions. Studies that followed people who already ate this way found that higher MIND scores went with lower rates of dementia, and in some groups with slower decline on memory and thinking tests. The one large randomized trial, which assigned people to the diet, did not demonstrate an advantage in memory and thinking test scores over a calorie-reduced usual diet over 3 years, and no clear difference was detected on brain scans. The trials identified for this page do not establish whether the diet prevents dementia itself.

Evidence from randomized controlled trials

A randomized trial assigns people to the diet by chance and compares them with people assigned to something else, which is the strongest way to test whether the diet itself causes a result. A single large trial of the MIND diet has been published, alongside several small, short ones.

Memory and thinking

The MIND trial enrolled 604 adults aged 65 and older in the Chicago and Boston areas who had no cognitive impairment, had a first-degree relative with dementia, had a body-mass index of 25 or more, and had diets that scored 8 or lower on a 14-point MIND questionnaire. Half were assigned to the MIND diet and half to a control diet, which meant keeping their usual foods. Both groups were asked to eat about 250 fewer calories a day, with a goal of losing 3 to 5 percent of body weight by year 3, and both received the same schedule of telephone counseling and group sessions. The MIND group also received blueberries, mixed nuts and extra virgin olive oil; the control group received gift cards (Barnes et al., 2023).

The main outcome was change in a global cognition score: the average of 12 tests covering episodic memory, semantic memory, executive function and perceptual speed, each standardized using its own baseline mean and standard deviation. Over 3 years, the score rose by 0.205 units in the MIND group and 0.170 units in the control group. The difference, 0.035 units, had a 95 percent confidence interval of -0.022 to 0.092 (P = 0.23). The trial did not demonstrate an advantage for the MIND diet: the interval includes no effect, and it also includes a small benefit, so the result is inconclusive rather than proof that the diet does nothing. Results for the 4 separate thinking domains were similar. The trial was completed by 93.4 percent of participants, and results held when missing data were filled in statistically and when the 44 people tested by telephone during the Covid-19 pandemic were set aside (Barnes et al., 2023).

These are test scores, not diagnoses. The trial was designed to detect a slower rate of decline on the tests, and its specified outcomes were cognition and brain imaging, not diagnoses of dementia. The authors offer several reasons the groups may have looked alike: the control group also improved its diet and lost a similar amount of weight; both groups may have improved partly through practice with the tests; the participants were mostly well educated and of European descent, with about 10 percent Black participants; or the diet may not improve cognition, or may need longer to show an effect (Barnes et al., 2023). A systematic review rated this trial at low risk of bias (van Soest et al., 2024).

Several later analyses of the same trial have looked for groups in whom the diet might have helped. In participants with a body-mass index of 35 or higher, the MIND group's cognition scores rose faster than the control group's by 0.040 units a year; body-mass index was the only characteristic, among many tested, that changed the result (Halloway et al., 2025). In another analysis, the diet's effect differed by the level of 2 Alzheimer's-related proteins in blood at the start of the trial (Dhana, Aggarwal, Arfanakis, et al., 2026).

A third analysis grouped people by how much their MIND score improved rather than by the diet they were assigned. People whose scores rose the most, by about 4 points, had faster yearly gains in cognition than people whose scores did not change (β = 0.035; 95 percent confidence interval, 0.006 to 0.064), and the analysis did not detect a difference in this association by assigned group (Dhana, Aggarwal, Ventrelle, et al., 2026). These are secondary analyses. The subgroup findings were not the trial's main question, and the third compares people who chose to change more with people who did not, which is no longer a randomized comparison. They suggest questions for future trials rather than answering them.

Several small trials have tested the diet over about 3 months in other groups. In Iran, 40 middle-aged women with obesity were assigned to a calorie-reduced MIND diet or a calorie-reduced control diet; 37 were analyzed, 22 in the MIND group and 15 in the control group. The MIND group improved more on tests of working memory, verbal recognition memory and attention (Arjmand et al., 2022), and a systematic review judged the trial to have some concerns about bias (van Soest et al., 2024). Also in Iran, 56 adults aged 18 to 60 with metabolic syndrome were assigned for 3 months to MIND diet advice or to general healthy-eating advice, with no calorie restriction in either group and a placebo capsule in both; the MIND group's total cognitive score improved more (Gholami et al., 2026).

In Northern Ireland, 41 healthy adults aged 40 to 55 were assigned for 12 weeks to the MIND diet with support, the MIND diet without support, or their usual diet with basic government healthy-eating guidance. Both MIND groups raised their diet scores and reported better mood and physical quality of life, and no difference in cognitive function was detected between groups (Timlin et al., 2025).

In Hong Kong, 48 adults aged 60 and older with high blood pressure, most with primary schooling or less, were assigned to 3 months of MIND counseling, MIND counseling combined with guided forest walks, or usual care. Right after the 3 months of counseling, no clear difference from usual care was detected on a memory and thinking screening test. At the assessment 3 months after the intervention ended, the authors reported greater improvement in both intervention groups than with usual care. The groups differed in age at the start, with the usual-care group oldest, and this comparison did not adjust for that difference; the combined group's results also cannot be credited to the diet alone (Law et al., 2026).

These small trials were short, used different comparisons and different tests, and were not designed to show effects on long-term memory or dementia. They do not settle the large trial's result either way.

Brain imaging

In the MIND trial, 200 participants had usable brain scans at the start and at 3 years. They were not a random sample: after the first 100 enrollees, scans were offered to a subgroup chosen to reach a target number, the target of about half the participants was not reached, and of 267 people scanned at the start, 200 were analyzed at 3 years.

Across both groups, white-matter hyperintensities, small areas of change seen on scans, increased, and the hippocampus and total brain volume shrank slightly. No clear difference between the MIND and control groups was detected on any of the 3 measures; for hippocampal volume, for example, the difference was 0.005 (95 percent confidence interval, -0.016 to 0.026). The authors note that these comparisons were perhaps underpowered and not corrected for multiple testing (Barnes et al., 2023). A brain scan is a surrogate outcome: it measures a change in the brain, not how well a person thinks or whether they will develop dementia.

Cardiometabolic outcomes

The trials identified for this page were not designed to test whether the MIND diet prevents heart attacks, strokes or other cardiovascular events. In the MIND trial, an analysis of 518 participants grouped people by how much weight they lost over 3 years rather than by diet group. Compared with people who did not lose weight, those who lost more than 10 percent of their body weight had lower LDL cholesterol by 8.3 percent, lower triglycerides by 28.2 percent, higher HDL cholesterol by 12.4 percent, and lower C-reactive protein, a marker of inflammation, by about 59 percent; these changes did not differ between the MIND and control diets (Dhana, Aggarwal, Voigt, et al., 2025). These are blood markers, not heart disease, and the comparison is by weight change, not by random assignment, so it does not show the MIND diet caused them.

Cancer

The trials identified for this page were not designed to test whether the MIND diet prevents cancer.

Body weight, as measured

In the MIND trial, both groups were asked to cut about 250 calories a day. Over 3 years, measured body weight changed by -5.0 kg (95 percent confidence interval, -5.8 to -4.1) in the MIND group and -4.8 kg (-5.7 to -4.0) in the control group, a similar change in both (Barnes et al., 2023). The weight change came with the calorie goal both groups shared, and it cannot be credited to the MIND foods. The archive reports weight as a measurement and never as a goal or a measure of success; see the standing rule in the review record.

Mortality

No trial identified for this page was long or large enough, or designed, to test the MIND diet's effect on death. In the MIND trial, 10 people died, 4 in the MIND group and 6 in the control group; the data and safety monitoring board judged none of the deaths or other adverse events to be related to the diet. Adverse events overall were similar, 127 events in 89 people in the MIND group and 153 events in 91 people in the control group (Barnes et al., 2023). These safety records do not establish whether the diet changes the risk of death.

Evidence from long-term prospective cohort studies

A cohort study follows people who already eat a certain way and records what happens to them. It can show that a pattern goes with an outcome; it cannot by itself show that the pattern caused it. In the MIND studies, diet was measured once or a few times with a food frequency questionnaire, a list of foods people report eating over the past year, and scored from 0 to 15.

Memory, thinking and dementia

The first evidence came from the Rush Memory and Aging Project, which followed 923 older adults, aged 58 to 98, for an average of 4.5 years. In the analysis adjusted for age, sex, education, a gene linked to Alzheimer's risk, physical and mental activity and total calories, which included 789 people and 135 cases of Alzheimer's disease, those in the top third of MIND scores developed Alzheimer's disease at a lower rate than those in the bottom third (hazard ratio 0.47; 95 percent confidence interval, 0.29 to 0.76), and those in the middle third also had a lower rate (0.65; 0.44 to 0.98). In the same group, the Mediterranean and DASH scores were linked with lower rates only in their top thirds (Morris, Tangney, Wang, Sacks, Bennett, & Aggarwal, 2015).

When that analysis was further adjusted for depressive symptoms and body weight, the middle third's result was no longer statistically significant (0.77; 0.51 to 1.17), while the top third's held (0.50; 0.30 to 0.83). The authors note that the participants were old and largely non-Hispanic white, that some foods, including berries, nuts and olive oil, were measured with a single question each, and that for berries the only question asked about strawberries (Morris, Tangney, Wang, Sacks, Bennett, & Aggarwal, 2015).

A companion analysis of 960 people from the same project, followed for an average of 4.7 years, found that higher MIND scores went with slower decline on memory and thinking tests. The difference in yearly decline between the top and bottom thirds of scores was estimated to equal being 7.5 years younger (Morris, Tangney, Wang, Sacks, Barnes, et al., 2015).

Studies in other groups have been less consistent. A 2024 systematic review found that higher MIND scores were linked with lower dementia risk in 7 of 10 cohorts, but with slower decline in overall thinking in only 2 of 7 cohorts and slower decline in memory in 1 of 6. Many of the positive findings came from North American cohorts, and the Rush project produced the most consistent ones (van Soest et al., 2024).

Pooled analyses give an idea of size for dementia. In 3 cohorts from the United Kingdom and the United States with 18,136 participants, each 3-point increase in MIND score went with a lower risk of dementia (hazard ratio 0.83; 95 percent confidence interval, 0.72 to 0.95); a meta-analysis of 11 cohorts with 224,049 participants and 5,279 dementia cases found a hazard ratio of 0.83 (0.76 to 0.90) for the top third compared with the bottom third of scores (Chen et al., 2023).

A 2026 meta-analysis of cohort studies found a hazard ratio for dementia of 0.78 (0.68 to 0.89) for the highest compared with the lowest MIND adherence, based on 18,328 participants; in the same review, the pooled estimates for the Mediterranean diet, 0.85 (0.71 to 1.03), and the DASH diet, 0.80 (0.60 to 1.06), included no difference (Wang et al., 2026). Those comparisons come from different sets of studies, so they do not show that one diet is better than another.

For decline over time, a meta-analysis of 8 cohorts with 26,103 participants found that each 1 standard deviation higher MIND score went with slightly better cognitive scores at a given time, but the estimate for slower yearly decline, 0.010 units (-0.001 to 0.021), included no difference (Huang et al., 2023). A 2026 analysis that harmonized individual data from 8 cohorts in Europe and the United States found that associations between several healthy diets and change in cognition over time were limited and inconsistent; the MIND score, measured in 3 United States cohorts, was the only one linked with better trajectories on a test of executive function (Soldevila-Domenech et al., 2026). Only the abstracts of the 2026 meta-analysis of dementia risk, the 2023 meta-analysis of decline and the 2026 harmonized analysis were opened for this page.

Cardiometabolic outcomes

A 2026 meta-analysis of observational studies separated its results by design. Among the cohort studies it pooled, higher MIND scores went with a lower risk of death from cardiovascular disease (relative risk 0.78; 95 percent confidence interval, 0.67 to 0.90), with high variation between studies and signs of publication bias. Its estimate for cardiovascular disease itself, 0.86 (0.68 to 1.08), included no difference and combined cohort, case-control and cross-sectional studies; one Australian cohort in that pool found a higher risk with higher scores. For high blood pressure, the cross-sectional studies showed a lower risk with higher scores but the cohort studies did not (Ahmadirad et al., 2026).

Cancer

No cohort study of the MIND diet and cancer was included in the 2026 meta-analysis; its cancer estimate came entirely from case-control studies, described below (Ahmadirad et al., 2026).

Body weight, as measured

The cohort studies opened for this page treated body weight as something to adjust for, not as an outcome, and none reported weight change by MIND score.

Mortality

In the 2026 meta-analysis of cohort evidence, higher MIND scores went with a lower risk of death from any cause (relative risk 0.86; 95 percent confidence interval, 0.81 to 0.92). The results varied widely between studies, largely by region; in the 2 European cohorts the pooled estimate, 0.82 (0.55 to 1.22), included no difference; and the authors found signs of publication bias. Most studies in the review were judged at moderate risk of bias (Ahmadirad et al., 2026). The review's mortality participant total differs between its text and study table, so this page does not use that total.

Evidence from case-control and cross-sectional studies

A case-control study compares people who already have a disease with people who do not and asks about their past eating, which makes it prone to errors in recall and in how the 2 groups were chosen. A cross-sectional study measures diet and health at the same moment, so it cannot show which came first. The 2026 meta-analysis pooled 5 case-control studies of cancer, 3 of breast cancer and 2 of glioma, a type of brain tumor, with 1,268 cases among 3,147 participants, and found lower odds of these cancers with higher MIND scores (relative risk 0.45; 95 percent confidence interval, 0.31 to 0.65) (Ahmadirad et al., 2026). That is not evidence that the diet lowers the risk of cancer in general, and the diet was not designed around cancer.

Highlighted studies

These 4 carry the most weight for the MIND diet: the trial, the 2 papers that introduced it, and the most complete review of the brain research.

On a narrow screen, scroll the table sideways to see every column.

Highlighted studies for the MIND Diet
Study Design Sample size Duration Finding The limitation that matters
Barnes et al., 2023, the MIND trial Randomized controlled trial, MIND diet with a 250-calorie daily cut against usual diet with the same cut 604 adults 65 and older with a family history of dementia, overweight, with low diet scores 3 years Cognition scores rose 0.205 units on MIND and 0.170 on the control diet; difference 0.035 (95 percent confidence interval, -0.022 to 0.092). No advantage demonstrated; no clear difference detected on brain scans. The comparison diet was active: both groups cut calories, lost similar weight and got the same counseling. The trial was not designed to test dementia diagnoses.
Morris, Tangney, Wang, Sacks, Bennett, & Aggarwal, 2015, Rush Memory and Aging Project Prospective cohort 923 older adults; the adjusted model included 789 people and 135 cases of Alzheimer's disease Average 4.5 years Top third of MIND scores: hazard ratio 0.47 (0.29 to 0.76) for Alzheimer's disease compared with the bottom third. Observational, in one group of mostly white older volunteers, with a short time between diet measurement and diagnosis.
Morris, Tangney, Wang, Sacks, Barnes, et al., 2015, Rush Memory and Aging Project Prospective cohort 960 older adults Average 4.7 years Slower decline on memory and thinking tests with higher scores; top against bottom third equal to being 7.5 years younger. The same cohort in which the score was first tested; later cohorts found this link less consistently.
van Soest et al., 2024 Systematic review of 40 articles, 32 cohorts and 2 trials 32 unique cohorts Studies published up to July 2023 Lower dementia risk in 7 of 10 cohorts; slower overall decline in 2 of 7; the one trial rated at low risk of bias did not demonstrate a benefit. Did not pool results into a single estimate or rate certainty; positive findings concentrated in North America.

Head to head

No trial identified for this page has compared the MIND diet directly with the Mediterranean or DASH diet. The large trial compared it with a calorie-reduced usual diet (Barnes et al., 2023). Of the small trials, one compared it with a calorie-reduced control diet (Arjmand et al., 2022), one with general healthy-eating advice and no calorie restriction (Gholami et al., 2026), one with a usual diet plus basic government guidance (Timlin et al., 2025), and one with usual care (Law et al., 2026).

In the Rush Memory and Aging Project, MIND, Mediterranean and DASH scores were compared in the same people: the top thirds of the MIND and Mediterranean scores had similar associations with Alzheimer's disease, the DASH score's was weaker, and only the MIND score's middle third also showed a lower rate (Morris, Tangney, Wang, Sacks, Bennett, & Aggarwal, 2015). The MIND score was also more strongly associated with slower decline than the other 2 scores in that group (Morris, Tangney, Wang, Sacks, Barnes, et al., 2015). Those are comparisons of scores in one cohort, not of diets tested against each other. The Mediterranean Diet page reports the Mediterranean trial evidence on cognition.

Where the evidence is absent

  • The trials identified for this page do not establish whether the MIND diet prevents dementia or Alzheimer's disease, cardiovascular events or cancer, or reduces mortality. The large trial's specified outcomes were cognitive test scores and brain scans.
  • The longest trial identified ran for 3 years, and the searches did not identify a study that followed people after they stopped eating this way.
  • Evidence beyond the large United States trial is limited to small, short trials with different comparisons: in women with obesity and adults with metabolic syndrome in Iran, healthy middle-aged adults in Northern Ireland, and older adults with high blood pressure in Hong Kong. None was designed to show long-term effects.
  • No trial identified for this page has tested the wine in the original score on its own; the large trial removed it.
  • No trial identified for this page has compared the MIND diet directly with the Mediterranean or DASH diet.
  • The searches for this page did not identify a dollar-cost comparison, a MIND-specific environmental footprint estimate, a study of why people stop the diet, or evidence on safety, nutritional adequacy or benefit in pregnancy, childhood or high activity beyond a few observational studies.

5. Mechanisms

(optional reading; select the heading to open or close this section)

This section explains how the diet is thought to work in the body. You can skip it. Nothing in the coaching sections depends on it.

Established mechanisms

None has been shown in people for the MIND diet as a whole. The trial authors state that evidence for these mechanisms in humans is not well established, and no clear difference between groups was detected on the brain scans they took to look for one (Barnes et al., 2023). What the trial did show is that people on the MIND diet had higher blood levels of carotenoids, pigments found in leafy greens and orange vegetables. That confirms they ate those foods; it is a sign of adherence, not a mechanism of benefit.

Proposed mechanisms

The diet's creators chose its foods for nutrients studied in relation to the aging brain. Leafy greens supply folate, vitamin E, carotenoids and flavonoids; nuts, vegetable oils and whole grains supply vitamin E; fish supplies long-chain omega-3 fats. In cell and animal studies, these nutrients reduce oxidative stress, a kind of chemical damage, and inflammation, and some reduce the buildup of beta-amyloid, the protein that forms plaques in Alzheimer's disease. The limits on red meat, butter, cheese, sweets and fried food are meant to reduce saturated and trans fats, which animal research links to damage to the barrier between the blood and the brain (Morris, Tangney, Wang, Sacks, Barnes, et al., 2015). These are proposed mechanisms.

Another explanation has been raised for the trial result itself: weight loss, which both groups shared, might improve cognition through lower inflammation or better insulin sensitivity, which could have hidden any difference between the diets (van Soest et al., 2024). That is also a proposal, not a finding.

6. Risks, contraindications and myths

(select the heading to open or close this section)

Warnings from professional or regulatory bodies

No professional or regulatory body has issued a warning about the MIND diet itself. Current statements on alcohol from 2 bodies apply to its wine component. The American Heart Association's 2026 scientific statement lists, among the features of a heart-healthy pattern: "if alcohol is not consumed, do not start; if alcohol is consumed, limit intake" (Lichtenstein et al., 2026). The Dietary Guidelines for Americans, 2025 to 2030, say to "consume less alcohol for better overall health" and name people who should avoid alcohol completely, including pregnant women and people recovering from alcohol use disorder or unable to control the amount they drink (U.S. Department of Agriculture & U.S. Department of Health and Human Services, 2026, p. 5).

The original MIND score gave full credit for 1 glass of wine a day and no credit for not drinking at all (Morris, Tangney, Wang, Sacks, Barnes, et al., 2015). The large trial removed the wine recommendation for safety (Liu et al., 2021); that decision belongs to that trial, and other MIND studies have handled wine in their own ways, for example by replacing it with tea (van Soest et al., 2024).

The case for a health benefit from light drinking has also weakened. Much of it came from studies whose non-drinking comparison groups included people who had quit after becoming ill; when a 2016 analysis of 87 studies corrected for that and for study quality, low-volume drinkers showed no lower risk of death (relative risk 0.97; 95 percent confidence interval, 0.88 to 1.07) (Stockwell et al., 2016). Among the current guidance documents examined for this page, none recommends that a person who does not drink start drinking for health, and the American Heart Association says so in as many words.

Nutrient gaps

No study opened for this page measured nutrient shortfalls on the MIND diet. The score gives no credit for dairy foods and counts cheese against the total, so a person who cuts dairy to raise their score is changing an important part of their diet; whether that leaves a gap depends on what else they eat, which is a question for a registered dietitian. The trial asked participants not to take vitamin supplements such as folate, B12 or multivitamins during the study (Barnes et al., 2023). That was a research requirement to keep the comparison clean, not advice; decisions about supplements belong to the person's physician.

Who should not follow it without medical supervision

  • People taking warfarin or a similar blood thinner, because the diet raises vitamin K intake from leafy greens and they need to keep that intake consistent (National Institutes of Health Office of Dietary Supplements, 2021).
  • People with kidney disease who are on dialysis or have been told to limit potassium. Needs depend on the stage of disease, lab results and treatment. The National Kidney Foundation advises that most people with chronic kidney disease who are not on dialysis, and most transplant recipients, do not have to limit beans for potassium or phosphorus, and that people on hemodialysis work with a kidney dietitian on how to include them (National Kidney Foundation, 2023).
  • People with an allergy to nuts, fish or other foods central to the diet. The trial excluded people allergic to more than one of its key foods (Liu et al., 2021).
  • Anyone for whom alcohol is a risk, including people who are pregnant, in recovery, or taking medication that interacts with alcohol, if they are considering the wine component (U.S. Department of Agriculture & U.S. Department of Health and Human Services, 2026).

Medication interactions

Warfarin is the main one: its effect can rise or fall when vitamin K intake changes suddenly, and leafy greens such as spinach, kale, collards and turnip greens are major sources of vitamin K (National Institutes of Health Office of Dietary Supplements, 2021). Alcohol matters only if a person follows the original score's wine component: federal guidance names people taking medications that can interact with alcohol among those who should avoid it (U.S. Department of Agriculture & U.S. Department of Health and Human Services, 2026). For a client taking insulin, a sulfonylurea or blood pressure medication, a substantial change in eating, especially eating less as in the trial version, is something the client keeps the prescriber informed about. A coach never adjusts medication; the point of knowing this is to send the client back to the prescriber.

Signs it is going wrong

A coach or family member might notice a person counting servings anxiously, feeling guilty about a meal that did not "count," turning down meals with others because of the score, or losing weight without meaning to. None of these is automatically a problem: people track servings for many ordinary reasons. The coach notices and asks what the behavior is for, whether it causes distress, whether it narrows what the person eats, and whether it gets in the way of daily life. Physical changes such as dizziness, unusual bruising or bleeding in someone on warfarin, or unexplained weight loss are reasons for the client to contact their clinician, who works out the cause. A worsening in memory or thinking is not a sign the diet is failing; it is a reason to see a physician.

Myths and where they came from

Myth: "The MIND diet is proven to prevent Alzheimer's disease."
Where it came from: the first 2015 papers, one of which reported that people in the top third of MIND scores had a 53 percent lower rate of Alzheimer's disease (Morris, Tangney, Wang, Sacks, Bennett, & Aggarwal, 2015). What is true: that was an association in one group of older volunteers, and the authors said a randomized trial was needed. The trial that followed did not demonstrate an advantage on memory and thinking tests over a calorie-reduced usual diet, no clear difference was detected on brain scans, and the trial was not designed to test dementia diagnoses (Barnes et al., 2023).
Myth: "You need a glass of wine a day for the MIND diet to work."
Where it came from: the original score, which gave full credit for 1 glass of wine a day (Morris, Tangney, Wang, Sacks, Barnes, et al., 2015). What is true: the trial removed wine for safety (Liu et al., 2021), no study found for this page has tested the wine component on its own, and the American Heart Association advises that a person who does not drink should not start (Lichtenstein et al., 2026).
Myth: "Blueberries protect your memory."
Where it came from: the MIND score's separate berry component, which its creators added because a large study of nurses had linked berry intake with slower cognitive decline and because berries improved memory in animal studies (Morris, Tangney, Wang, Sacks, Barnes, et al., 2015). What is true: in the study that first linked the MIND score with lower Alzheimer's risk, berry intake was measured with a single question about strawberries (Morris, Tangney, Wang, Sacks, Bennett, & Aggarwal, 2015), and in the trial that supplied blueberries to the MIND group, the trial did not demonstrate an advantage for that group on memory and thinking tests over the comparison group (Barnes et al., 2023). The diet is a pattern scored across 15 food groups, not a single food.

7. Key terms

MIND diet
The Mediterranean-DASH Intervention for Neurodegenerative Delay, an eating pattern that blends the Mediterranean and DASH diets and emphasizes foods studied in relation to brain health.
DASH
Dietary Approaches to Stop Hypertension, the blood pressure-lowering diet that is one of the MIND diet's 2 parents. Some research papers spell it out differently, but this is the standard name.
MIND diet score
A 0 to 15 score, or 0 to 14 without wine, that measures how closely a person's usual eating matches the MIND pattern. The wine item belongs to the original 2015 score and is not a recommendation to start drinking.
Food frequency questionnaire
A list of foods on which people report how often they have eaten each one, usually over the past year.
Randomized controlled trial
A study that assigns people by chance to a treatment or a comparison, so differences in results can be credited to the treatment.
Active comparison
A comparison group that receives a real intervention of its own, such as calorie reduction and counseling, rather than no intervention.
Standardized units
A way of expressing test scores relative to the spread of scores in the group, so that different tests can be averaged together.
Confidence interval
The range of results compatible with the data; when it includes no difference, the study did not detect an effect, which is not the same as showing there is none.
Practice effect
Improvement on a test that comes from having taken it before, rather than from a change in ability.
Cohort study
A study that follows people who already eat or live a certain way and records what happens to them.
Hazard ratio
How much more or less often an event such as a diagnosis happens in one group than in another over time; 0.47 means a rate a little under half as high.
Tertile
One third of a group, after sorting people from lowest to highest on a measure such as a diet score.
Post hoc analysis
An analysis decided on after a study's data were collected, useful for new questions but weaker than the study's planned comparison.
Hippocampus
A part of the brain central to forming memories.
White-matter hyperintensities
Small bright areas on brain scans that show changes in the brain's white matter, the tissue that connects brain regions.
Carotenoids
Plant pigments found in leafy greens and orange vegetables, measured in blood to check whether people ate those foods.

8. Review questions

  1. Name 4 food groups that count toward the MIND score and 2 that count against it, and explain why a list a client brings in may not match the list on this page.
  2. Using section 4, describe the MIND trial: who took part, what the MIND group was compared with, what was measured, and for how long. Why does the comparison group matter when reading its result?
  3. A client says, "My dad had Alzheimer's, and I keep forgetting names. I've started the MIND diet." What does the coach explore, and where is the referral line?
  4. Using sections 4 and 6, explain where the belief that the MIND diet prevents Alzheimer's disease came from and what the evidence now shows.

9. References

Ahmadirad, H., Pasdar, Y., Moludi, J., Sedighi, M., Moradinazar, M., Teymoori, F., Nachvak, S. M., Mirmiran, P., & Farhadnejad, H. (2026). The Mediterranean-DASH Intervention for Neurodegenerative Delay (MIND) diet and the risk of cancer, cardiovascular diseases, hypertension, all-cause, and cardiovascular diseases mortality: A systematic review and meta-analysis of observational studies. Nutrition & Metabolism, 23(1), Article 79. https://doi.org/10.1186/s12986-026-01135-y

Alzheimer's Association. (n.d.). 10 early signs and symptoms of Alzheimer's and dementia. alz.org/alzheimers-dementia/10_signs

Arabpour, Z., & Milajerdi, A. (2025). Adherence to the MIND diet and its association with the risk of depression, anxiety, and sleep disturbances in physically active adults: A cross-sectional study. BMC Psychiatry, 25(1), Article 1048. https://doi.org/10.1186/s12888-025-07505-9

Arjmand, G., Abbas-Zadeh, M., & Eftekhari, M. H. (2022). Effect of MIND diet intervention on cognitive performance and brain structure in healthy obese women: A randomized controlled trial. Scientific Reports, 12(1), Article 2871. https://doi.org/10.1038/s41598-021-04258-9

Bahrami, A., Zamaninasab, Z., Khorasanchi, Z., Zarban, A., Asadian, A. H., Ferns, G. A., & Karbasi, S. (2025). The relationship between adherence to the MIND diet and maternal anxiety and sleep disorders. Maternal and Child Health Journal, 29(7), 954-961. https://doi.org/10.1007/s10995-025-04119-1

Barnes, L. L., Dhana, K., Liu, X., Carey, V. J., Ventrelle, J., Johnson, K., Hollings, C. S., Bishop, L., Laranjo, N., Stubbs, B. J., Reilly, X., Agarwal, P., Zhang, S., Grodstein, F., Tangney, C. C., Holland, T. M., Aggarwal, N. T., Arfanakis, K., Morris, M. C., & Sacks, F. M. (2023). Trial of the MIND diet for prevention of cognitive decline in older persons. New England Journal of Medicine, 389(7), 602-611. https://doi.org/10.1056/NEJMoa2302368

Chen, H., Dhana, K., Huang, Y., Huang, L., Tao, Y., Liu, X., Melo van Lent, D., Zheng, Y., Ascherio, A., Willett, W., & Yuan, C. (2023). Association of the Mediterranean Dietary Approaches to Stop Hypertension Intervention for Neurodegenerative Delay (MIND) diet with the risk of dementia. JAMA Psychiatry, 80(6), 630-638. https://doi.org/10.1001/jamapsychiatry.2023.0800

Dhana, K., Aggarwal, N. T., Arfanakis, K., Sacks, F. M., & Barnes, L. L. (2026). Dietary intervention and cognition across Alzheimer's disease biomarker levels: The MIND clinical trial. Journal of Alzheimer's Disease, 111(3), 1301-1308. https://doi.org/10.1177/13872877261442856

Dhana, K., Aggarwal, N. T., Ventrelle, J., Voigt, R. M., Liu, X., Agarwal, P., Tangney, C., Arfanakis, K., Sacks, F. M., & Barnes, L. L. (2026). Adherence to the Mediterranean-DASH Intervention for Neurodegenerative Delay (MIND) diet and longitudinal changes in global cognition: A post hoc analysis of the MIND trial. The American Journal of Clinical Nutrition, 124(3), Article 101433. https://doi.org/10.1016/j.ajcnut.2026.101433

Dhana, K., Aggarwal, N. T., Voigt, R. M., Ventrelle, J., Rajan, K. B., Kaddurah-Daouk, R., Marcovina, S. M., Liu, X., Agarwal, P., Tangney, C., Arfanakis, K., Sacks, F. M., & Barnes, L. L. (2025). Effect of weight loss through dietary interventions on cardiometabolic health in older adults. International Journal of Obesity, 49(12), 2503-2510. https://doi.org/10.1038/s41366-025-01902-6

Duncan, M. B., Scott, T. M., Holland, T. M., Muentener, P. J., & Zhang, F. F. (2026). Maternal diet quality during pregnancy and child cognition in United States cohorts. The Journal of Nutrition, 156(2), Article 101281. https://doi.org/10.1016/j.tjnut.2025.101281

Gholami, Z., Derakhshan, Y., Maracy, M. R., & Paknahad, Z. (2026). Impact of MIND diet on cognitive function among patients with metabolic syndrome: A randomised control clinical trial. BMC Neurology, 26(1), Article 383. https://doi.org/10.1186/s12883-026-04756-1

Guzman, J., & Aguiñaga, S. (2024). The COM-B model: A cross-sectional survey assessing capability, opportunities, and motivation to follow the MIND diet among informal female caregivers of people with Alzheimer's disease and related dementias. Frontiers in Dementia, 3, Article 1451310. https://doi.org/10.3389/frdem.2024.1451310

Halloway, S., Aggarwal, N. T., Arfanakis, K., Sacks, F. M., Barnes, L. L., & Dhana, K. (2025). Effect modifiers of the MIND diet for cognition in older adults: The MIND diet trial. Alzheimer's & Dementia, 21(10), Article e70731. https://doi.org/10.1002/alz.70731

Huang, L., Tao, Y., Chen, H., Chen, X., Shen, J., Zhao, C., Xu, X., He, M., Zhu, D., Zhang, R., Yang, M., Zheng, Y., & Yuan, C. (2023). Mediterranean-Dietary Approaches to Stop Hypertension Intervention for Neurodegenerative Delay (MIND) diet and cognitive function and its decline: A prospective study and meta-analysis of cohort studies. The American Journal of Clinical Nutrition, 118(1), 174-182. https://doi.org/10.1016/j.ajcnut.2023.04.025

Law, Q. P. S., Yau, K. K. Y., Tyrovolas, S., & Kwan, R. Y. C. (2026). Effects of the Mediterranean-DASH Intervention for Neurodegenerative Delay (MIND) diet and forest bathing in improving cognitive and metabolic health among hypertensive older adults: A feasibility randomised controlled trial. BMC Nutrition, 12(1), Article 27. https://doi.org/10.1186/s40795-026-01240-4

Lichtenstein, A. H., Khera, A., Anderson, C. A. M., Appel, L. J., DeSilva, D. M., Gardner, C., Hu, F. B., Jones, D. W., Petersen, K. S., & American Heart Association. (2026). 2026 dietary guidance to improve cardiovascular health: A scientific statement from the American Heart Association. Circulation. Advance online publication. https://doi.org/10.1161/CIR.0000000000001435

Liu, X., Morris, M. C., Dhana, K., Ventrelle, J., Johnson, K., Bishop, L., Hollings, C. S., Boulin, A., Laranjo, N., Stubbs, B. J., Reilly, X., Carey, V. J., Wang, Y., Furtado, J. D., Marcovina, S. M., Tangney, C., Aggarwal, N. T., Arfanakis, K., Sacks, F. M., & Barnes, L. L. (2021). Mediterranean-DASH Intervention for Neurodegenerative Delay (MIND) study: Rationale, design and baseline characteristics of a randomized control trial of the MIND diet on cognitive decline. Contemporary Clinical Trials, 102, Article 106270. https://doi.org/10.1016/j.cct.2021.106270

Morris, M. C., Tangney, C. C., Wang, Y., Sacks, F. M., Barnes, L. L., Bennett, D. A., & Aggarwal, N. T. (2015). MIND diet slows cognitive decline with aging. Alzheimer's & Dementia, 11(9), 1015-1022. https://doi.org/10.1016/j.jalz.2015.04.011

Morris, M. C., Tangney, C. C., Wang, Y., Sacks, F. M., Bennett, D. A., & Aggarwal, N. T. (2015). MIND diet associated with reduced incidence of Alzheimer's disease. Alzheimer's & Dementia, 11(9), 1007-1014. https://doi.org/10.1016/j.jalz.2014.11.009

National Institute of Diabetes and Digestive and Kidney Diseases. (2021). Low blood glucose (hypoglycemia). niddk.nih.gov/health-information/diabetes/overview/preventing-problems/low-blood-glucose-hypoglycemia

National Institutes of Health Office of Dietary Supplements. (2021). Vitamin K: Fact sheet for health professionals. ods.od.nih.gov/factsheets/VitaminK-HealthProfessional

National Kidney Foundation. (2023). Beans. kidney.org/kidney-topics/beans

Pu, Y., Tan, H., Huang, R., Du, W., Luo, Q., Ren, T., & Li, F. (2025). Adherence to the Mediterranean Dietary Approaches to Stop Hypertension Intervention for Neurodegenerative Delay (MIND) diet and trajectories of depressive symptomatology in youth. Journal of Affective Disorders, 379, 647-654. https://doi.org/10.1016/j.jad.2025.03.087

Soldevila-Domenech, N., Ayala-Garcia, A., Zhou, X., Yi, S. Y., Ros, E., Sala-Vila, A., Lehtisalo, J., Steffen, L. M., de la Torre, R., & IAFNS Retrospective Harmonization Expert Working Group. (2026). Diet and cognitive function in aging: An individual participant data meta-analysis from 8 cohorts in Europe and the United States. The Journal of Nutrition, 156(9), Article 101694. https://doi.org/10.1016/j.tjnut.2026.101694

Stockwell, T., Zhao, J., Panwar, S., Roemer, A., Naimi, T., & Chikritzhs, T. (2016). Do "moderate" drinkers have reduced mortality risk? A systematic review and meta-analysis of alcohol consumption and all-cause mortality. Journal of Studies on Alcohol and Drugs, 77(2), 185-198. https://doi.org/10.15288/jsad.2016.77.185

Timlin, D., McCormack, J. M., Kerr, M., Keaver, L., & Simpson, E. E. A. (2025). The MIND diet, cognitive function, and well-being among healthy adults at midlife: A randomised feasibility trial. BMC Nutrition, 11(1), Article 59. https://doi.org/10.1186/s40795-025-01020-6

Timlin, D., McCormack, J. M., & Simpson, E. E. A. (2021). Using the COM-B model to identify barriers and facilitators towards adoption of a diet associated with cognitive function (MIND diet). Public Health Nutrition, 24(7), 1657-1670. https://doi.org/10.1017/S1368980020001445

U.S. Department of Agriculture & U.S. Department of Health and Human Services. (2026). Dietary guidelines for Americans, 2025-2030. cdn.realfood.gov/DGA.pdf

van Soest, A. P., Beers, S., van de Rest, O., & de Groot, L. C. (2024). The Mediterranean-Dietary Approaches to Stop Hypertension Intervention for Neurodegenerative Delay (MIND) diet for the aging brain: A systematic review. Advances in Nutrition, 15(3), Article 100184. https://doi.org/10.1016/j.advnut.2024.100184

Wang, Y., Lin, X., Cheng, L., Cheng, X., He, J., & Xia, S. (2026). Dietary patterns and risk of dementia in elderly individuals: A systematic review and meta-analysis of cohort studies. Nutrition Reviews, 84(6), 1111-1128. https://doi.org/10.1093/nutrit/nuaf121

Evidence rating and review record

Every page in this archive rates its evidence with GRADE, the same 4-level scale used in the clinical guidelines you will meet in practice. High means further research is very unlikely to change the conclusion. Moderate means further research may change it. Low means further research is likely to change it. Very low means the conclusion is uncertain. GRADE rates each outcome separately, so a diet can be high for one outcome and very low for another. Each row below says whether the rating comes from a named published review or is this page's own judgment, and exactly which comparison it rates. The rating in the banner is for this diet's main claimed outcome. A high rating means the research is solid; it does not mean the diet is right for everyone, and it does not mean a coach should recommend it.

No published review found for this page has applied GRADE to the MIND diet, so every rating below is this page's own judgment, using GRADE's 5 reasons for rating certainty down (risk of bias, inconsistency, indirectness, imprecision and publication bias) and its reasons for rating up. The full judgment for each outcome is in the page's claim ledger. The systematic reviews cited here rated the quality of individual studies with other tools; those are not GRADE ratings. James Peth reviewed and accepted each of these ratings on September 27, 2026.

On a narrow screen, scroll the table sideways to see every column.

GRADE certainty of evidence by outcome, with who rated it and why
Outcome Certainty Who rated it, and for which comparison Why it is rated this way
Memory and thinking test scores (global cognition), the outcome in the banner Moderate that the MIND diet did not produce a clearly larger gain; a small benefit cannot be ruled out This page's own judgment. MIND diet with a 250-calorie daily cut against usual diet with the same cut and the same counseling, in adults 65 and older with overweight and a family history of dementia, over 3 years (Barnes et al., 2023). Starts high as a randomized trial. Risk of bias not serious: a systematic review rated it low (van Soest et al., 2024), assessors were blinded and 93.4 percent completed. Inconsistency and indirectness not serious for this narrowly stated comparison. Rated down once for imprecision: the trial was planned to detect a difference of 0.02 units a year, about 0.06 over 3 years, and the interval, -0.022 to 0.092, includes both no effect and a 3-year difference larger than that. For the broader question of protecting memory in other people, indirectness would lower it further.
Brain imaging (hippocampal volume, total brain volume, white-matter hyperintensities), a surrogate outcome Low that no clear difference was detected This page's own judgment. Same trial and comparison, in 200 participants with scans at both times. Starts high. The systematic review rated the imaging results at low risk of bias (van Soest et al., 2024); this page makes a more cautious judgment and rates down once for risk of bias. Scans were offered to a nonrandom subgroup after the first 100 enrollees; 267 of the 604 participants were scanned at the start, 33 in each group had no 3-year scan, and the trial report read for this page describes no check of whether those missing scans could have changed the result. Equal losses in the 2 groups do not show that the missing scans were unrelated to how brains changed. Rated down once for imprecision: imaging was not part of the trial's power calculation, and each interval includes no difference, some worsening, and a benefit substantial relative to the control group's observed change on the study's measurement scale.
Diagnosis of dementia or Alzheimer's disease Low for an association This page's own judgment. Higher against lower MIND scores in people's usual diets, in cohort studies of middle-aged and older adults (Chen et al., 2023; Wang et al., 2026; van Soest et al., 2024). Starts low as observational evidence. Not rated down: pooled estimates are consistent (hazard ratios about 0.78 to 0.83, with narrow intervals). Not rated up: the effect is modest, the dose pattern could reflect other healthy habits, and diet was self-reported. This is not a rating of whether the diet prevents dementia, which the trials identified for this page were not designed to test.
Rate of decline in memory and thinking over time Very low This page's own judgment. Higher against lower MIND scores, in cohort studies (van Soest et al., 2024; Huang et al., 2023; Soldevila-Domenech et al., 2026). Starts low. Rated down once for inconsistency: the size and direction of estimates differ across cohorts, and a harmonized analysis of 8 cohorts found limited and inconsistent associations. The pooled estimate, 0.010 units a year per 1 standard deviation (-0.001 to 0.021), leaves the size of any association uncertain.
Death from any cause Very low This page's own judgment. Higher against lower MIND scores, in cohort analyses (Ahmadirad et al., 2026). Starts low. Rated down once for inconsistency: estimates varied widely, largely by region, and the European estimate included no difference. Rated down once for publication bias, which the authors detected for this outcome. Ordinary confounding is already reflected in the low starting point and is not counted again.

How this archive talks about weight. This page reports what studies measured, including body weight, and does not treat weight change as a goal or as a measure of a diet's success. Weight a person loses without meaning to can be a sign of a health problem, and where it is, the page names it as a reason to see a clinician. People are described the way the study described them.

Status: reviewed and approved by James Peth, MS, MPH, PhD, on October 3, 2026, after a first review, a final verification and a combined final review. What changed: first version September 27, 2026; revised the same day after the first review: the trial result restated as not demonstrating an advantage rather than showing no difference, 4 small trials and a few studies in pregnancy, youth and active adults added, the cancer and cardiovascular findings separated by study design, the certainty ratings rebuilt, and several absence statements narrowed to what the searches found.

What changed after the final verification, September 28, 2026: a count of mortality analyses removed because it combined 2 outcomes; the brain imaging rating's reasons corrected, since the published review had rated the imaging results at low risk of bias and this page's more cautious judgment is now stated as its own; the Hong Kong trial's result tied to the assessment 3 months after the intervention ended; 3 outcome descriptions made more precise; 2 reference details corrected; and table row headers, narrow-screen table notes and wrapping for long links added from the archive template. Prepared by James Peth, MS, MPH, PhD.

What changed after the combined final review, completed September 30, 2026, with repairs made October 1, 2026: the brain imaging rating's reason for imprecision now compares each interval with the control group's change on the study's own measurement scale instead of giving percentages; and the mortality paragraph now says that the 2026 review's participant total differs between its text and its study table, so this page does not use it. No rating changed.

Next scheduled review: August 2027. Pages built on annual guidance are rechecked each year. The alcohol guidance cited in section 6 is in that category and should be rechecked first.

Diet Reference Archive | One James

Prepared by James Peth, MS, MPH, PhD

© 2026–2027 One James. All rights reserved.

This page is for education and coaching practice. It is not medical or dietary advice.

James Peth, MS, MPH, PhD https://onejames.com
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