Navigating Vitamin Habits: Stroke Risk, Older Adults, and Brain Health
The important message is that vitamins are not a substitute for proven stroke-prevention strategies. For older adults, taking supplements “just in case” isn’t necessarily beneficial, and some supplements can interact with medications or cause harm at excessive doses. The National Institute on Aging recommends discussing supplements with a healthcare professional, particularly because older adults may take multiple medications.
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5 things to keep in mind
Don’t assume more vitamins mean better brain health.
Multivitamins have not been shown to prevent stroke or cardiovascular disease in healthy people.
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Correct deficiencies rather than megadose.
Vitamins can be important when someone is deficient, but taking large amounts without a demonstrated need isn’t a proven strategy for preventing dementia or stroke.
Be careful with B vitamins.
B6, B12, and folate have been studied extensively in relation to stroke and cognitive health. However, the American Heart Association says the effectiveness of folic acid and B-complex supplementation for stroke prevention is not well established.
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Guideline Central
Excessive vitamin B6 can itself cause serious problems, including nerve damage.
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Focus on the major stroke risks.
High blood pressure, smoking, diabetes, high cholesterol, physical inactivity, obesity, and heart conditions such as atrial fibrillation are much more important targets for stroke prevention than routinely taking vitamin supplements.
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Think “food first.”
A diet rich in vegetables, fruits, whole grains, healthy proteins, nuts, and healthy fats provides numerous nutrients together. The 2024 AHA/ASA stroke-prevention guideline recommends a Mediterranean-style dietary pattern for appropriate adults to reduce stroke risk.
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What about brain health?
There isn’t a single vitamin that can guarantee protection against dementia. Research on vitamin E, B vitamins, vitamin D, and other supplements remains mixed; for example, NCCIH reports insufficient or inconsistent evidence for several commonly promoted supplements for cognitive health.
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Bottom line: For an older adult, the best “vitamin habit” is not automatically taking more pills. It’s making sure nutritional needs are met—preferably through food—and using supplements when there is a genuine nutritional need or a clinician recommends them, while concentrating on blood pressure, cholesterol, diabetes, physical activity, diet, smoking, and heart health for stroke prevention.
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