What is the cause of heart attack in a previously normal 65 aged person?

Asymptomatic: Heart disease. Unfortunately the first sign of a heart disease can be a heart attack and of those up to 30% result in sudden death. That is why preventative measures and treatment of risk factors is so vital. See your doctor regularly.

Coronary arteries: Coronary artery disease can be silent until a heart attack occurs and in fact almost half of all patients present with a heart attack as their first symptom of coronary artery disease.