A diet higher in folate has been linked to a variety of health benefits such as reducing birth defects and warding off heart disease and strokes. Moreover, according to a Dutch study, taking 800 micrograms of folic acid a day might also help ward off the cognitive decline of aging.
In the study, more than 800 cognitively healthy patients (aged 50-75) were given either a folic acid supplement or a placebo for three years. Patients who took the supplement performed well on memory tests (with scores comparable to people more than five years younger) and cognitive speed tests (with results scoring almost two years younger than their peers).
Though it is unclear how folic acid works to protect the brain, some studies suggest folate lowers inflammation; others suggest it may play a role in expression of dementia-related genes. Either way, folate can be found naturally in:
- Dark-green leafy vegetables
- Strawberries
- Oranges
- Beans
San Francisco Chronicle June 20, 2005
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