Causes of a heart attack is multi factorial. 1. Have a healthy balanced diet 2. Exercise regularly. 3. Maintain your body weight and BMI 4. Control your hypertension. Get your BP checked regularly 5. Control your blood sugar if you are a diabetic. 6. Control your lipid levels if you have dyslipidaemia. 7. Never smoke 8. Sleep for 6-7 hours at a stretch. 9. Get an annual medical checkup. 10.Do yoga / meditation to reduce your stress levels These are some of the things you can do to ensure a healthy life.