It does not matter if LDL cholesterol is low, but elevated LDL cholesterol will increase the prevalence of coronary heart disease. LDL cholesterol is carried by low-density lipoprotein, the normal range of 2.7 ~ 3.12 mmol / L, when the content is high, cholesterol can be accumulated in the arterial blood vessel wall, time is easy to form atherosclerosis, and increase the risk of coronary heart disease. Low LDL cholesterol can be seen in physiological lowering, malnutrition, chronic anemia, chronic hepatitis and other diseases, physiological lowering without special treatment. Malnutrition and chronic diseases, only need to actively deal with the original disease can be, without special treatment, generally does not matter. Dyslipidemia, it is recommended to consult a doctor, under the guidance of a professional doctor, standardized treatment.