![]() A 2015 review of studies found that supplementation with B6, B12, and/or folic acid failed to slow or reduce the risk of cognitive decline in healthy older adults and did not improve brain function in those with cognitive decline or dementia. But similar benefits are not linked to supplements: A 2012 review of data on thousands of older adults found that those who took omega-3 fatty acid supplements had no fewer dementia diagnoses or better scores on tests of short-term memory than those who took a placebo.ī vitamins have not fared any better. One study published in The Lancet Neurology in 2012, for example, found that among 2,854 older adults with memory complaints, those who took ginkgo biloba extract twice a day for five years had no fewer cases of Alzheimer’s than those who took a placebo.Īs for fish oil, some studies have found that people with diets high in omega-3s-which are found in fatty fish such as salmon-may have a lower risk of dementia. But decades of research have yet to demonstrate their benefits. Some of the more popular supplements marketed for memory enhancement are fish oils (omega-3 fatty acids) B vitamins such as folate, B6, and B12 and ginkgo biloba extract, made from the dried leaves of a ginkgo tree.
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