Cholesterol

Cholesterol is a waxy, fat-like substance that your body needs for good health, but in the right amounts. Unhealthy levels of cholesterol can lead to a condition called high blood cholesterol. High cholesterol is when you have too much of a fatty substance called cholesterol in your blood. It's mainly caused by eating fatty food, not exercising enough, being overweight, smoking and drinking alcohol. It can also run in families.