INTRODUCTION
Foods high in compounds such as antioxidants and omega-3 fatty acids can improve brain health and memory, experts say.
From fruit to fish, here are six things that, based on various studies, may perk up your gray matter.
Walnuts
They even look like little brains, so maybe that's Mother Nature's way of telling us what walnuts are good for.
Indeed, a 2009 study in the Journal of Nutrition found that diets in which nuts
made up as little as 2 percent reversed signs of aging in the brains
of old rats, including the ability of the brain to function and process
information.
And a study presented in 2010 at the International Conference on
Alzheimer's Disease reported that mice with Alzheimer's demonstrated
improved learning, memory and motor coordination after being fed
walnuts.
Walnuts contain high amounts of antioxidants, which some researchers
say may combat the damage to brain cells' DNA caused by free radicals in
our bodies.
Carrots
Carrots have long been known to be good for the eyes and it turns out, they're good for the brain, too.
Carrots have high levels of a
compound called luteolin
, which could reduce age-related memory deficits and inflammation in
the brain, according to a study published in 2010 in the journal
Nutrition. In the study, mice whose daily diet was supplemented with 20
milligrams of luteolin had reduced inflammation in their brains. The
researchers said the compound also restored the mice's memory to the
level of younger mice's.
Olive oil, peppers and celery are also high in luteolin.
Berries
Adding
some vitamin-rich berries to your diet may not be a bad idea if you
want to improve your memory, according to several studies.
One study, published in 2010 in the Journal of Agricultural and Food
Chemistry, found that after 12 weeks of daily supplements of wild
blueberry juice, nine older adults who had started to experience slight
memory problems showed better learning and recall abilities than a
similar group of adults who didn't take the supplements. The blueberry
group also showed reduced symptoms of depression.
And in a 2009 report in the Journal of Nutrition, researchers said
they examined a group of studies that showed fruits such as blueberries
and strawberries, which are high in antioxidants, can decrease a type of
stress in cells associated with aging and increase the signaling
capabilities in brains. In one of the studies, researchers placed
6-month-old rats on a diet supplemented with blueberry and strawberry
extracts (totaling 2 percent of their diet) for nine months. These rats
had better spatial and memory skills than rats not given the
supplements.
Fish
Although recent research has shown that taking fish oil supplements may not help slow
the cognitive decline in people with Alzheimer's disease, other
studies have shown that eating fish rich in omega-3 fatty acids could
help slow typical cognitive decline that comes with age.
A 2005 study in the journal Archives of Neurology found that people
65 and older who ate two meals of fish a week for six years had a 13
percent decrease in cognitive decline, compared with people who didn't
eat any fish regularly. And people who ate one meal of fish a week had a
10 percent decrease in cognitive decline.
Fish high in vitamin B12 may also help protect against Alzheimer's , according to a study published in 2010 in the journal Neurology.
Coffee and tea
Coffee and tea do more than keep you awake
in the mornings studies have shown they may prevent Alzheimer's disease
and improve cognitive function.
A 2010 study in the Journal of Alzheimer's Disease found that when
researchers gave caffeinated coffee to mice genetically engineered to
develop Alzheimer's disease, the disease either slowed in progression or
never developed. Based on the finding, coffee eventually could serve as
a therapeutic treatment for people with Alzheimer's disease, the
researchers said.
Tea showed protective effects on the brain, too. Tea drinkers did
better on tests on memory and information processing than non-tea
drinkers did, according to a 2010 study of 716 Chinese adults 55 and
older in the Journal of Nutrition, Health and Aging.
Spinach
Your mom always told you to eat your
spinach, and there's science to back up her advice. The green leafy
vegetable is loaded with vitamins C and E, which, studies have shown,
help to improve cognitive abilities.
A 2000 study in the Journals of Gerontology showed that rats whose
diet was supplemented with vitamin E experienced a 500 to 900 percent
increase in brain and nerve tissue over an eight-month period, as well
as an increase in the release of dopamine in the brain, the "pleasure"
chemical that controls flow of information to different parts of the
brain.
And a 2000 study in the journal Brain Research found that aging rats
had some of their age-related memory and motor deficits reversed after
they were fed diets supplemented with spinach, strawberries or
blueberries.
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