Best way to prevent heart disease?

Healthy lifetyles: You have over 50% of control...You cannot control family history/genetic, your gender (some argues this), and time, but pretty much all else u can..Eat healthy, exercise regularly, attain/keep ideal body wt, don't smoke, don't drink in excess, and treat medical illnesses (if u have cholesterol, diabetes, bp, rheumatoid arthritis etc) the best you can. Thus you can reduce the chances.. Best of luck.

Lifestyle: Some factors cannot be changes like family history, and presence of other disease that impact cv disease. But the best approach is to start early in life attending to healthy lifestyle and behavioral choices. Healthy diet, watching weight, no smoking/tobacco, regular exercise including cardiovascular work, stress reduction, regular good sleep, positive life outlook all help.