HDL cholesterol is a lipoprotein that transports cholesterol to the liver for metabolism. The main role of HDL cholesterol is to fight against atherosclerosis, and its distribution in the human body is not the same in men and women, and its level is influenced by many factors, mainly by exercise, but also by some diseases, such as liver disease and heart disease. In addition, smoking, alcohol and hormone injections can also increase or decrease HDL cholesterol levels. The treatment for high and low HDL cholesterol levels is usually with medication, such as statins, Rosuvastatin, Simvastatin, etc.