Low LDL cholesterol is generally not harmful to the human body. LDL cholesterol belongs to the risk factors of atherosclerosis, which can lead to the occurrence of atherosclerosis, for example, it can lead to the emergence of coronary heart disease and cerebral infarction. The lower the LDL cholesterol is, the greater the benefit to the patient, not because of low LDL cholesterol will not cause the patient to develop life-threatening conditions, so sometimes even take special medication to control the LDL cholesterol below the standard range, which can be a better way to prevent the emergence of atherosclerosis. It is recommended that patients can take oral statin drugs, representative drugs include atorvastatin, pravastatin and so on. For patients with myocardial infarction or those with high risk factors for coronary heart disease, it is often recommended to keep LDL cholesterol below 1.8 mmol/L for a greater relative benefit.