how to prevent a heart attack
Last updated September 6, 2026.
Most heart attacks are prevented by controlling blood pressure, cholesterol, and blood sugar, avoiding tobacco, staying active, and taking any medicine your clinician prescribes. How much effort each area needs depends on your numbers, your age, and whether you already have heart disease or diabetes. If you have had a heart attack, a stent, or a stroke, prevention usually includes daily medicine such as a statin and sometimes aspirin, and stopping those on your own raises risk. If you have not had one, the plan is built around your blood pressure reading, your LDL cholesterol, your A1C, and whether you smoke. Practical habits that help: about 150 minutes a week of moderate activity, cooking with less salt and less saturated fat, more vegetables, fruit, and whole grains, 7 or more hours of sleep, and limiting alcohol. Ask a clinician before starting daily aspirin, since it is no longer recommended for most people without known heart disease.
What to do
- Know your numbers: Get blood pressure, cholesterol, and A1C checked, and write down the actual results so you can track them.
- Treat blood pressure early: Readings at or above 130/80 usually need attention through diet, activity, or medicine before symptoms ever appear.
- Stop tobacco: Quitting smoking is the single largest change most smokers can make, and free quitlines and nicotine replacement improve your odds.
- Take medicine daily: Statins and blood pressure pills only work while you take them, so refill early and tell your clinician about side effects instead of stopping.
- Ask before aspirin: Daily aspirin helps some people with known heart disease but raises bleeding risk in others, so it is a decision to make with a clinician.
- Know the warning signs: Chest pressure, shortness of breath, cold sweat, or pain in the arm, jaw, or back means call 911, not wait it out.
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