Picture two friends who both turned 60 the same year. They live in the same town and go to the same church. One starts most days with a bowl of berries and eats fish a couple of times a week. The other usually reaches for a pastry and a drive-through lunch. Twelve years later, could you see a difference inside their brains?

According to a large new study, you very well might. Researchers following adults from the famous Framingham Heart Study found that people whose eating looked more like the MIND diet lost brain tissue more slowly over about a decade. For the strongest difference they measured, the researchers estimated it was like delaying brain aging by roughly 2.5 years. You can read the summary in ScienceDaily’s report on the study.

In my practice I often see people in their 50s, 60s and 70s who quietly worry about their memory. This research about MIND diet brain health is good news, because it points to something within reach: your fork, your grocery cart and your daily habits. Let me walk you through what the study found, what it did not find, and how you can put it to work this week.

🔬 What the MIND Diet Brain Health Study Found

The study, published in the Journal of Neurology, Neurosurgery & Psychiatry, followed 1,647 middle-aged and older adults from the Framingham Heart Study Offspring cohort. Their average age was 60 at the start. Every person had at least two brain MRI scans between 1999 and 2019, and none had a stroke or dementia at the first scan.

Participants filled out food frequency questionnaires, which are detailed surveys about how often you eat certain foods. The researchers then gave each person a MIND diet score from 0 to 15. The average score was just under 7, so most people were somewhere in the middle, with plenty of room to improve.

The Key Results

• Slower grey matter loss. Grey matter is the brain tissue packed with nerve cells that does much of your thinking. Each 3-point rise in MIND score was linked to grey matter loss that was slower by 0.279 cubic centimeters per year. The researchers equated that to about 20 percent less age-related decline, or about 2.5 years of delayed brain aging.
• Slower ventricle enlargement. The ventricles are fluid-filled spaces inside the brain, and they tend to grow larger as surrounding tissue shrinks with age. Each 3-point rise was linked to slower enlargement, equated to 8 percent less tissue loss and about 1 year of delayed brain aging.
• Berries and poultry stood out. Higher berry intake was linked to slower ventricle enlargement. Poultry was linked to both slower ventricle enlargement and slower grey matter decline.
• Sweets and fried fast food worked the other way. More sweets were linked to faster ventricle enlargement and greater shrinkage of the hippocampus, the brain’s memory center. Fried fast foods were linked to a larger decline in hippocampal volume.

The links were stronger in older participants, in people who were more physically active, and in those who were not overweight. That tells me food works best as part of a whole lifestyle, not as a single magic ingredient.

Two Surprises and Honest Limitations

Not every result matched typical advice. Higher whole grain intake was linked to faster grey matter and hippocampal loss, while higher cheese intake showed a more favorable pattern. These were unexpected findings from a single observational study, so I would not overinterpret either one. This study certainly does not make cheese a health food.

Most importantly, this was an observational study, not a randomized trial. It can show that two things travel together, but it cannot prove that the diet caused the slower brain aging. Diet was self-reported, so memory errors are possible. The researchers could not rule out mild memory problems at the first scan, changes in diet over the years, or genetic risk. Participants were mostly White, and the people who ate most like the MIND diet were also healthier overall, with less obesity, smoking, diabetes and high blood pressure. One study is never the final word.

🧠 Why It Matters: Feeding a Brain That Is Fearfully and Wonderfully Made

Your brain naturally loses a little volume as the years go by. That is part of normal aging, and it is nothing to fear. The encouraging message of this study is that the pace of that change may be linked to everyday choices we make at the table.

Think of the MIND diet as a pattern built on a few pillars: leafy greens, berries, nuts, beans, fish, olive oil and poultry. It also asks us to go easy on foods like sweets and fried fast food. Two of those pillars, fish and berries, are especially interesting because they carry nutrients that have been studied for the brain.

Fish and Omega-3 for Brain Health

Fish supplies two long-chain omega-3 fats called EPA and DHA. According to the NIH Office of Dietary Supplements, DHA levels are especially high in the brain, the retina and sperm cells. Your body converts only very small amounts of the plant omega-3 (ALA, found in flax and walnuts) into EPA and DHA, so getting them from food or supplements is the only practical way to raise your levels.

A small study in Brain and Behavior looked at 45 healthy older adults with an average age of about 77. Higher blood EPA and DHA was linked to better integrity of the blood-brain barrier in one brain region. The blood-brain barrier is the protective lining that controls what passes from your bloodstream into your brain. Links to memory and language scores were only trends, and this small snapshot study cannot show cause and effect.

Blueberries and Brain Health

Berries are rich in polyphenols, the colorful plant compounds that give blueberries their deep blue and purple hues. In the Framingham study, berry intake was linked to slower ventricle enlargement. That fits a growing body of research interest in berries and the aging brain.

In one six-month randomized trial published in Frontiers in Psychology, 143 adults aged 60 to 80 with mild cognitive impairment took a branded grape and blueberry extract or a placebo. The extract group improved in speed of information processing and visuospatial learning, though other tests showed no significant difference. A 2022 systematic review of 11 human trials of berry foods and supplements found the overall evidence to be mixed.

🥗 MIND Diet Foods List: The Top Foods to Slow Brain Aging

Here is how I explain the MIND diet foods list to my patients. You do not need a perfect score. Remember, in this study every 3-point rise in score made a measurable difference, and the average person was sitting at about 7 out of 15.

For many of my patients, the hardest part is not adding fish or berries. It is the busy weeks when eating out or skipping meals crowds out good food. That is where a quality supplement can help fill the gap, as long as we remember that it complements a good plate and does not replace one.

A quick safety note: fish oil can affect bleeding. If you take a blood thinner, have surgery coming up, or have a seafood allergy, please talk with your doctor before starting any omega-3 supplement.

✅ Your MIND Diet Brain Health Action Plan

Here is what I tell my patients who want to start this week. Pick two or three steps, master them, then add more.

1. Eat berries most days. Add a handful of blueberries or mixed berries to your morning, or enjoy them in place of dessert.
2. Put fish on the menu at least twice a week. Wild salmon, sardines and mackerel are excellent choices. If you rarely eat fish, ask your doctor whether an omega-3 supplement makes sense for you.
3. Fill half your plate with vegetables, especially leafy greens. A big salad dressed with extra virgin olive oil at lunch is an easy win.
4. Choose poultry, beans and nuts for protein and snacks. Grilled or baked chicken, a bowl of lentil soup and a small handful of walnuts all fit the pattern.
5. Cut back on sweets and fried fast food. These were the foods most tied to faster shrinkage in this study, so they are worth limiting first.
6. Keep moving. The diet’s links were stronger in more active people. Walking, strength training or a fun sport like pickleball all count.
7. Protect your sleep. Your brain does important restoration at night. Read more in my article on sleep loss and brain health.
8. Feed your spirit. Begin or end each day with prayer and gratitude. A peaceful heart is part of a healthy life.
9. See your doctor about any memory concerns. If you or a loved one notices changes in memory or thinking, schedule a visit rather than waiting.

❓ Frequently Asked Questions

What is the MIND diet?

The MIND diet is an eating pattern developed at Rush University Medical Center that blends the Mediterranean and DASH diets with a focus on brain health. It emphasizes leafy greens, berries, nuts, beans, fish, olive oil and poultry, and limits foods like sweets and fried fast food. In the new study, people were scored from 0 to 15 on how closely they followed it.

Does the MIND diet really make your brain 2.5 years younger?

Not literally. The 2.5-year figure is the researchers’ statistical estimate for how much slower grey matter loss was with each 3-point rise in MIND score. Because the study was observational, it shows a link, not proof that the diet caused the difference.

Are blueberries good for brain health?

In this study, higher berry intake was linked to slower enlargement of the brain’s ventricles. One six-month trial of a grape and blueberry extract showed some benefits on certain thinking tests, but reviews of berry studies overall are mixed. I recommend enjoying whole berries regularly as part of a healthy pattern.

Should I take omega-3 supplements for brain health instead of eating fish?

Eating fish comes first, because large trials of omega-3 capsules for thinking and memory, such as AREDS2, have often shown no benefit. A quality omega-3 can complement your diet if you rarely eat fish. Talk with your doctor first, especially if you take a blood thinner, have surgery planned or have a seafood allergy.

🙏 A Final Word of Hope

I find this study deeply encouraging. Over 12 years, ordinary people eating ordinary foods showed measurable differences in their brains, and the foods involved are ones you can buy at any grocery store. You do not need perfection. You need a direction and a few faithful steps.

So start with a bowl of berries, a piece of wild salmon, a big green salad and a walk with someone you love. Ask God for wisdom and strength, and trust that caring for the body He gave you is never wasted effort. Your best years can still be ahead of you.

Dr. Don Colbert, MD