🧠 “This vitamin raises stroke risk overnight” — what’s the truth?
The headline is misleading. If it’s referring to vitamin E, there is some research behind the concern, but taking vitamin E does not mean you are suddenly going to have a stroke overnight.
Some randomized-trial evidence has found an association between vitamin E supplementation and hemorrhagic (bleeding) stroke. A large 2010 meta-analysis found a relative increase of about 22%, while finding a small reduction in ischemic stroke.
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More recent evidence is less definitive: a 2021 systematic review of 18 randomized trials found no significant effect on total stroke, and concluded that more evidence was needed regarding stroke subtypes.
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PubMed
A 2024 meta-analysis likewise concluded that vitamin E supplements should not be used specifically to prevent stroke.
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What should seniors do?
Don’t start high-dose vitamin E simply to protect your brain or heart.
Getting vitamin E from foods such as nuts, seeds and vegetable oils is different from taking concentrated supplements.
If you’re already taking vitamin E, particularly at a high dose, discuss it with your doctor or pharmacist rather than stopping prescribed medications yourself.
Be especially cautious about supplements if you’re taking blood thinners or antiplatelet drugs, because bleeding risk can be an important consideration.
Bottom line: Vitamin E isn’t a “stroke-causing vitamin,” but supplementing with high doses without a clear medical reason isn’t recommended for stroke prevention. The strongest proven ways to reduce stroke risk remain controlling blood pressure, cholesterol and diabetes, avoiding tobacco, exercising, and taking prescribed medications appropriately.
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