Low LDL cholesterol is a gradual return to normal blood lipid concentrations in the body and is also common in patients who are chronically malnourished. Low-density lipoprotein in the body is within the normal range to maintain the elasticity of blood vessels. If the level is low, it may indicate long-term malnutrition or anemia, which may affect the body’s basal metabolism. Nutrients need to be replenished in time to avoid anemia and hypotension. If the LDL level in the body decreases after treatment for hyperlipidemia, it is a good sign that the treatment is effective and the blood lipid concentration in the body gradually returns to the normal range. In this case, you need to continue taking medication and adjust your life and eating habits to avoid recurrence of the disease. Some diseases can also cause this symptom, such as hyperthyroidism, which is caused by an increase in the body’s basal metabolic rate.