No. High cholesterol is one of the major causes, but there are others. The more risk factors you have, the greater you are at risk of developing coronary heart disease. Some of the other factors include:
High Triglyceride levels
High Blood Pressure
Family Health History
The higher the level of each risk factor, the higher you are at risk of developing coronary heart disease. Cholesterol can be controlled, but you must know your cholesterol levels.