Just as there is no magic
pill to prevent cognitive decline, no single 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.
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 foods for your brain are the same ones that protect your heart and blood
vessels, and they include 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.
