Vitamin habits, stroke risk, and brain health in older adults
The important message is that vitamins are nutrients, not a substitute for proven stroke-prevention measures. Most older adults can obtain what they need from a varied diet, although some people may need supplements because of deficiencies, diet, medications, or reduced absorption with age.
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National Institute on Aging
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What matters most
Don’t take megadoses “for brain health.” More isn’t necessarily better, and excessive amounts of some vitamins can cause harm or interact with medicines.
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National Institute on Aging
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Vitamin B12 matters when you’re deficient. Older adults can have difficulty absorbing B12, and correcting a deficiency is important for normal nerve and brain function. That doesn’t mean high-dose B12 prevents strokes in everyone.
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National Institute on Aging
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Vitamin D is important for overall health, but supplementation shouldn’t be viewed as a proven stroke-prevention treatment.
A basic multivitamin may have possible cognitive benefits, but NIH notes that evidence is still developing and it is too early to recommend multivitamins specifically to prevent cognitive decline.
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National Institutes of Health
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Vitamin E supplements deserve caution. Evidence has not established a stroke-prevention benefit, and some research has raised concerns about hemorrhagic stroke risk with high-dose vitamin E.
Vitamin K can interact with warfarin. People taking warfarin should keep vitamin-K intake consistent and discuss supplements with their clinician.
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National Institute on Aging
The biggest protection for the brain
For older adults, controlling high blood pressure, cholesterol, diabetes, smoking, physical inactivity, and heart conditions such as atrial fibrillation has much stronger evidence for reducing stroke risk than taking a collection of vitamin pills.
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NINDS
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A diet rich in vegetables, fruits, whole grains, nuts, healthy proteins and healthy fats, combined with regular physical activity, is a much better foundation for both cardiovascular and brain health.
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NINDS
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Bottom line: For an older adult, the goal shouldn’t be “take more vitamins.” It’s correct deficiencies, avoid unnecessary megadoses, check for drug interactions, and focus on the major stroke risk factors.
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