Source: Harvard University
Just
as there is no magic pill to prevent cognitive decline, no single almighty
brain food can ensure a sharp brain as you age. Nutritionists emphasize that
the most important strategy is to follow a healthy dietary pattern that
includes a lot of fruits, vegetables, legumes, and whole grains. Try to get
protein from plant sources and fish and choose healthy fats, such as olive oil
or canola, rather than saturated fats.
That said, certain foods in this
overall scheme are particularly rich in healthful components like omega-3 fatty
acids, B vitamins, and antioxidants, which are known to support brain health
and often referred to as foods. Incorporating many of these foods into a
healthy diet on a regular basis can improve the health of your brain, which
could translate into better mental function.
Research shows that the best brain
foods are the same ones that protect your heart and blood vessels, including
the following:
- Green, leafy vegetables.Leafy greens such as kale, spinach, collards, and
broccoli are rich in brain-healthy nutrients like vitamin K, lutein,
folate, and beta carotene. Research suggests these plant-based foods may
help slow cognitive decline.
- Fatty fish.Fatty fish are abundant sources of omega-3 fatty acids, healthy
unsaturated fats that have been linked to lower blood levels of
beta-amyloid—the protein that forms damaging clumps in the brains of
people with Alzheimer's disease. Try to eat fish at least twice a week,
but choose varieties that are low in mercury, such as salmon, cod, canned
light tuna, and pollack. If you're not a fan of fish, ask your doctor
about taking an omega-3 supplement, or choose terrestrial omega-3 sources
such as flaxseeds, avocados, and walnuts.
- Berries.Flavonoids, the natural plant pigments that give berries their brilliant
hues, also help improve memory, research shows. In a 2012 study published
in Annals of Neurology, researchers at Harvard's Brigham and Women's
Hospital found that women who consumed two or more servings of
strawberries and blueberries each week delayed memory decline by up to
two-and-a-half years.
- Tea and coffee. The
caffeine in your morning cup of coffee or tea might offer more than just a
short-term concentration boost. In a 2014 study published in The Journal
of Nutrition, participants with higher caffeine consumption scored better
on tests of mental function. Caffeine might also help solidify new
memories, according to other research. Investigators at Johns Hopkins
University asked participants to study a series of images and then take
either a placebo or a 200-milligram caffeine tablet. More members of the
caffeine group were able to correctly identify the images on the following
day.
- Walnuts.Nuts are excellent sources of protein and healthy fats, and one type of
nut in particular might also improve memory. A 2015 study from UCLA linked
higher walnut consumption to improved cognitive test scores. Walnuts are
high in a type of omega-3 fatty acid called alpha-linolenic acid (ALA), which
helps lower blood pressure and protects arteries. That's good for both the
heart and brain.