(i) Cessation of arterial blood flow.
(ii) Plaque or atheroma in arteries.
(iii) Eating foods high in calories or fat.
(iv) Accumulation of cholesterol, fatty acids and white blood cells in arteries.
(v) When heart tissue cells are damaged or die.
(vi) Anxiety and stress.
(vii) If diabetes and high blood pressure.
(viii) Overage.
(ix) Smoking.
(x) Increase in molecular efficiency.