image42-620x330ETH Health and WellnessCholesterol is a greasy substance present in the blood that is required for building healthy cells and maintaining cell membranes. It is basically produced by the human body but can also be taken from food. It also helps convert the sunlight into vitamin D. However, having high cholesterol can increase the risk of heart diseases. Hypercholesterolemia or high cholesterol increases the risk of coronary heart disease that causes heart attacks. Diet, exercise and weight are the three main factors that can affect cholesterol levels. It starts to rise after the age of 20. So, keep an eye on your weight and maintain a healthy lifestyle, in order to stay away from diseases. More