how to prevent a stroke
Last updated September 6, 2026.
**You can prevent most strokes by keeping your blood pressure at goal, not smoking, staying active, treating diabetes and high cholesterol, and taking any blood thinner prescribed for atrial fibrillation.** High blood pressure is the single biggest controllable cause of stroke, so knowing your numbers and treating them matters more than any supplement or single food. Your plan changes with your history: atrial fibrillation, a prior stroke or TIA, sickle cell disease, or a carotid artery narrowing all call for specific treatment beyond general habits. Day to day, the habits that help are steady movement most days, less sodium and more vegetables, fruit, and whole grains, limited alcohol, treating sleep apnea, and taking prescribed medicines every day rather than only when you feel unwell. Aspirin is not right for everyone and can cause bleeding, so ask before you start it. A stroke or TIA in progress is an emergency: call 911 rather than waiting to see if symptoms pass.
What to do
- Know your blood pressure: Check it at home or at a pharmacy, and tell your clinician if readings stay at or above 130/80.
- Take medicines daily: Blood pressure, cholesterol, diabetes, and anticoagulant medicines only work when taken consistently, even on days you feel fine.
- Ask about atrial fibrillation: An irregular pulse or palpitations deserve an ECG, since untreated AFib is a major and very treatable stroke risk.
- Stop smoking: Quitting lowers stroke risk, and nicotine replacement or prescription medicine roughly doubles your chance of success.
- Move and eat for your arteries: Build up to 150 minutes of moderate activity weekly, cut sodium, and fill half your plate with vegetables and fruit.
- Act FAST in an emergency: Face drooping, arm weakness, or speech trouble means call 911 immediately, because clot-busting treatment is time limited.
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