High-density cholesterol is a type of cholesterol classification, generally considered to be able to play an anti-atherosclerosis role, if low may increase the likelihood of atherosclerosis, thus inducing coronary heart disease, cerebrovascular disease and so on. Causes include bad lifestyle habits, such as prolonged sedentary behavior, lack of exercise, love of greasy food, smoking, etc. In addition, genetic factors, drug factors, or the body has chronic diabetes, obesity, cirrhosis of the liver, alcoholism, etc., may lead to low HDL cholesterol. If you have low HDL cholesterol, you should go to the hospital in time for further examination to clarify the cause of the disease, and then intervene positively and have regular checkups.