High LDL may be caused by poor lifestyle habits, genetic factors, drug applications, hypothyroidism and other diseases. LDL is a cholesterol-rich lipoprotein that is one of the risk factors for the development of atherosclerosis. Its elevated level is closely related to poor lifestyle habits such as high consumption of fatty foods, smoking and alcohol abuse, and lack of physical activity. At the same time, in some people abnormal lipid metabolism may be due to family hereditary causes. Elevated LDL can also be seen in people who take medications such as beta-blockers and glucocorticoids, as well as in people with hypothyroidism, nephrotic syndrome, Cushing’s syndrome, and other diseases. Therefore, it is recommended to consult a doctor for standardized diagnosis and treatment when LDL is elevated.