Brain health is shaped by what we eat every day. Your brain works nonstop to manage memory, mood and focus, and it relies on specific nutrients to function well over time.
We spoke with Dr. Krystal Lopez, a primary care physician at Houston Methodist, to discover the nutrients and foods that can help keep your brain healthy no matter your age.
The nutrients your brain loves (and where to find them)
A study in the journal Neuron showed that while the brain makes up just 2% of the body, it uses 20% of the body’s oxygen supply. That means the brain also uses 20% of the calories consumed, since the body needs oxygen to metabolize food to create energy. For every liter of oxygen we breathe in, five calories are burned.
The brain needs a lot of fuel to function, and it performs better when it gets a steady stream of these nutrients.
Omega‑3 fats (EPA/DHA)
Believe it or not, the brain is made up of 60% fat, specifically polyunsaturated fatty acids (PUFAs). These fats are considered “essential fatty acids” since they must come from your diet and absolutely should be part of your diet. Low intake of omega-3s is linked to age-related cognitive decline and an increased risk of Alzheimer’s disease. Two key types of omega-3s are eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), since they fight inflammation, repair brain cells and are absorbed into the protective sheath of brain cells.
“Omega‑3 fats are neuroprotective,” Dr. Lopez says. “They help maintain the structure of your neuronal membranes, which is critical for how brain cells communicate and function.”
B vitamins (especially folate)
“B vitamins, especially folate, help a lot with cognitive function,” Dr. Lopez explains. “In some individuals with mild cognitive impairment, they’ve been shown to slow certain types of brain atrophy.”
Having low levels of B vitamins may affect our mental health and are associated with worsening brain function. B vitamins and folate are also key to breaking down homocysteine, an amino acid in protein. High homocysteine levels are considered a risk factor for developing dementia and Alzheimer’s disease.
Antioxidants and phytonutrients (including flavonoids)
Our brains are vulnerable to inflammation, often caused by free radicals, the unstable oxygen molecules that can damage cells, proteins and DNA. Antioxidants, including vitamins C, E and phytonutrients, protect against the damage free radicals and chronic stress can cause.
Phytonutrients are naturally occurring chemicals in fruits and vegetables that safeguard the plants from unwelcome guests such as germs, pests and fungi. These chemicals help protect humans against disease as well.
Over 10,000 phytonutrients have been identified in dietary plants, and many phytonutrients are considered flavonoids. Many flavonoids can cross the blood-brain barrier, meaning they can directly affect the brain. High intake of foods with flavonoids is associated with less cognitive decline — including delayed Parkinson’s disease, Alzheimer’s disease and ischemic diseases, such as stroke and heart attack.
“Your brain is especially vulnerable to oxidative stress,” Dr. Lopez says. “Antioxidants help protect against that damage, which is why plant‑based foods play such a big role in brain health.”
RELATED: Does Eating Antioxidant-Rich Foods Help Prevent Cancer?
Vitamin D
Vitamin D is probably most known for its role in helping us have healthy bones, but it is also a building block for every cell in your body. The vitamin is important to our neuromuscular function, and as such, low vitamin D levels may affect brain health.
“Low vitamin D levels have been associated with cognitive impairment,” Dr. Lopez says. “It’s one of those nutrients that affects far more than bone health.”
Choline
Choline is considered a neurocognitive essential nutrient, and much like folate, is crucial for brain development early in life. Choline is key to many of our brain’s functions, including learning, memory, and even mood regulation. Getting adequate choline intake is associated with reduced risk of cognitive decline.
The best foods for brain health
These foods are full of nutrients the brain craves and that have been shown to have protective effects on the brain.
Berries
Berries are small antioxidant powerhouses with high concentrations of phytonutrients, specifically polyphenols. Many berries contain high amounts of anthocyanin, which give foods a blue, red or purple color. Berries also include high amounts of fiber: a cup of raspberries or blackberries provide eight grams of fiber, a cup of blueberries four grams and a cup of strawberries three.
Antioxidants reside in the skins of the berries, so the darker the color, the more antioxidants are available. For example, if you’re shopping for strawberries, you’ll want to choose the carton with deep, dark red berries over ones that are lighter.
Luckily, berries are widely available, and eating them fresh, frozen, dried or powdered can all provide benefits. (But if you buy dried berries, pay attention to the label's added sugars information.) Blackberries, native perennials here in Texas, are extremely high in anthocyanin, and are one of the best antioxidant values for your money of the everyday berries at the grocery.
But berries aren’t just a sweet affair. There are berries that are more associated with savory cooking — think allspice, sumac, juniper and pink peppercorns and capers. These savory berries are just as rich in flavonoids as their sweeter cousins.
“Berries are your antioxidants,” Dr. Lopez says. “They help protect against brain aging by reducing oxidative stress and may even help inhibit the beta‑amyloid deposition that’s seen in Alzheimer’s.”
Leafy greens
Leafy green vegetables are rich in vitamin K, beta carotene, lutein, folate and many more nutrients. A 2018 observational study showed that eating one serving of leafy greens per day may help slow cognitive decline as we age — the participants who consumed the most greens per day have brains that appear 11 years younger than those who consumed the fewest number of greens.
So what counts as a leafy green?
Dark greens: collards, dandelion greens, kale, mustard greens, spinach, Swiss chard
Green tops: Those leaves on top of your beets, carrots, radishes and turnips are all edible and full of nutrients. Feed your brain these greens, not your compost or trash!
Lettuces: Arugula, bibb, butter, endive, romaine and more
Herbs: Basil, chives, cilantro, dill, mint, oregano and parsley
Microgreens: These are edible green sprouts of vegetables and herbs, whether it’s broccoli, cabbage, kale or peas. Microgreens can be up to 40 times more nutrient dense than their mature counterparts.
This is also a gentle reminder that greens are a great way to season your food. Herbs are still considered leafy greens even when dried. While studies show there are generally more polyphenols per gram in fresh herbs than dried, it’s more important to cook with herbs you’ll actually use. Buying fresh and letting them wilt in the fridge won’t benefit your brain — so feel free to use dried herbs if that's what you're more likely to use.
Vegetables
It probably comes as no surprise that vegetables would be included in a list of brain-boosting foods. Vegetables should make up half your plate at mealtimes so you can get the advantages of these nutrient and fiber-dense foods.
Much like with fruit, eating vegetables in a variety of colors can help you get an important diversity of flavonoids in your diet. Vegetables can also help you reach your daily fiber limit, which we know is good for digestion but is also key to helping your body absorb more of these flavonoids.
Nightshades (honorary vegetables like eggplant, tomatoes and white potatoes as they’re most-often used in savory cooking) can cause inflammation, but that’s not the case for most of us. Some individuals with autoimmune conditions may have nightshade sensitivities, however.
Nightshades are rich in antioxidants and anti-inflammatory compounds that can help fight inflammation. Plus, cooking some nightshades can help boost the nutritional benefit. Cooked tomatoes, for example, offer 62% more of the phytonutrient lycopene than their raw counterparts. Plus, adding a delicious drizzle of a healthy fat such as olive oil can boost lycopene absorption.
Seafood
When eating for our brain health, red meat, pork and poultry should be a supporting actor, not the star, of our plates. Strive for them to take up just one-fourth of the real estate on your plate.
However, we should try to boost our intake (and variety) of seafood to one or more servings a week if we can. Why? Seafood is rich in omega-3 fatty acids, vitamins D and B12, as well as choline. One study showed that those with diets low in omega-3s scored lower on visual memory and executive function tests than those with diets higher in omega-3s.
“Fatty fish provide omega‑3s with anti‑inflammatory properties,” Dr. Lopez says. “Those fats help support the structure of neuron membranes, which is essential for memory and executive function.”
Salmon has one of the highest choline profiles, with a little over 90 mg in the recommended 4-ounce portion of the fish. Enjoy bivalves, such as oysters, mussels, clams or scallops? They’re extremely rich in vitamin B12. And while they can be divisive (albeit a flavor bomb – if you love Caesar salads, you know!), sardines are rich in omega-3s, vitamin D and are one of the safest fish types in terms of mercury levels.
It’s true that seafood can be expensive. Buying frozen and canned fish and bivalves are both good options — just make sure to pay attention to mercury levels. The fish you see at a counter are often defrosted from frozen, so buying frozen or canned can help you save cash unless you live near the sea.
Curious about seafood in the Houston/Galveston area? Texas Parks and Wildlife maintain fish consumption bans and advisories, and the Texas Department of State Health Services offers a mercury guide for fish caught in Texas waters.
Nuts and seeds
“Nuts and seeds are really important to your diet,” Dr. Lopez says. “They have a lot of vitamin E and can also offer omega-3s, but you need to watch your servings as they are calorically dense.”
Almonds offer the most vitamin E than any other nut, and walnuts are highest in the omega-3 alpha-linolenic acid (ALA). Chia seeds and flaxseeds are also high in ALA.
The pecans on the tree in your yard are great for your brain health, too. One study shows these native Texan nuts can slow motor neuron degeneration, the type of neuron damage seen in conditions such as amyotrophic lateral sclerosis (ALS). Another study indicates that consuming pecans may improve learning, memory and brain processing speed.
Nut butters can offer similar benefits — you’ll just want to watch out for added sweeteners. Spices, including cumin, fennel, poppy and mustard seeds, can also be used to get more seeds into your diet.
Beans and lentils
Beans and lentils, members of the legume family, are finally getting the attention they deserve as people become more fiber conscious (fibermaxxing comes to mind). Beans are a staple for cultures across the globe, as they are highly nutritious, offering both high amounts of protein and fiber. Beans also provide flavonoids and B vitamins, while helping to create anti-inflammatory short-chain fatty acids.
You can buy many types of beans, including perennial favorites like black, chickpea, pinto, red kidney and Great Northern, dried or canned. Low sodium or no sodium canned beans are both good choices, but you can also simply rinse a regular can of beans before adding to your dish.
You can also find green and black-eyed peas (both are beans!), edamame and fava beans in the freezer aisle. And don’t forget about affordable protein options tofu and tempeh, both made of soybeans. Also, milk and flour made of beans, such as soy milk and chickpea flour, can be a great way to sneak fiber and nutrition into our diets.
Whole grains
Whole grains are part of a balanced diet, as they provide fiber and B vitamins, and can help regulate your blood sugar. Whole grains also contain phytonutrients and combined with the high-fiber content, make it possible for your body to better absorb the crucial antioxidants.
Whole, intact grains can include things like whole-wheat bread and pasta, quinoa or oats. But don’t be afraid to explore with other grains such as:
Amaranth
Barley
Buckwheat
Bulgur
Cornmeal
Farro
Freekeh
Millet
Teff
Rice: black or Forbidden rice, brown rice, red rice, wild rice
Rye
Spelt
Wheatberry
Olive oil
Olive oil should be the primary cooking oil in the brain-boosting (and heart-healthy) pantry. A cornerstone of the Mediterranean diet, olive oil is a nutritional team player in that it can amplify the nutritional value of other foods.
For example, the healthy fats in olive oil help the body absorb more of vitamins D, E, and K from other foods. It can also help keep blood sugar levels steady after a meal, which can aid in reducing inflammation. Like many foods on this list, olive oil contains polyphenols that help fight against free radicals.
Coffee, tea and other drinks
Water, by far, gets the top marks for staying hydrated and it should always be the beverage we reach for first. But if you have a coffee or tea habit, you don’t have to fear. A February 2026 study shows that long-term moderate coffee or tea consumption was associated with a decreased chance in developing dementia.
The study tracked people over a 40-year span, and those who drank two to three cups of coffee or tea a day had lower rates of dementia than those who consumed little to no caffeine. But heads up, decaf lovers: the benefits were only seen in coffee and tea that contain caffeine.
While all tea is rich in polyphenols, green tea has over twice the amount of epigallocatechin-3-gallate (EGCG), a polyphenol thought to help with inflammation and protect against conditions such as diabetes, heart disease and obesity. Matcha may contain the most EGCG, as the beverage is made with whole tea leaves instead of being steeped in water.
RELATED: Coffee Is the World's No. 2 Beverage — But Is It Healthy? (PODCAST)
Brain-healthy diets to try
So what diets are rich with all of these foods?
MIND diet
The Mediterranean-DASH Diet Intervention for Neurodegenerative Delay (MIND diet) combines two of the most-researched diets, Mediterranean and DASH (Dietary Approaches to Stop Hypertension). The MIND diet was developed after a ten-year study to find the specific foods, nutrients and adequate serving sizes that helped protect against dementia and cognitive decline.
The MIND diet recommendations suggest these serving amounts for the foods discussed above:
Whole grains: Three or more servings per day
Vegetables: One or more servings per day
Leafy greens: six or more servings per week
Nuts: Five or more servings per week
Beans: Include in four or more meals per week
Berries: Two or more servings per week
Poultry: Two or more meals per week
Fish: Include in one or more meals per week
Olive oil: Should be the primary cooking oil
The diet suggests limiting foods higher in saturated and trans fat. The diet suggests keeping the following foods to a minimum:
Butter or margarine: Less than a tablespoon a day
Cheese: Less than one serving
Fried foods: Less than one serving a week
Pastries and desserts: Less than 5 servings a week
Red meat (beef, lamb, pork and processed meats): Less than 4 servings a week
“Foods high in saturated fat, added sugars and heavy processing increase oxidative stress,” Dr. Lopez says. “Those patterns are associated with a higher risk of cognitive decline compared to diets rich in lean proteins and polyunsaturated fats.”
Mediterranean diet
The Mediterranean diet by itself also is a healthy, anti-inflammatory eating pattern, that has been associated with better overall brain health, less brain shrinkage with age and as much as a 40% lower risk of developing dementia.
DASH diet
This diet was developed in a trial in the 1990s to help lower blood pressure. The diet is heart-healthy, focused on limiting saturated and trans fats and increasing intake of potassium, magnesium, calcium, protein and fiber.
RELATED: 4 Tips to Make a Heart-Healthy Diet Taste Great
Avoid eating patterns that ask you to limit brain-healthy foods
There are many diets out there that ask you to give up or severely cut back on carbohydrates, including whole grains, in favor of protein. The issue with these diets is that they eliminate or limit many of the brain-friendly food groups. Some of these diets also lead to higher consumption of saturated fat, which has been shown time and time again to be detrimental to both our brain and heart health.
