Blood viscosity may be related to hyperlipidemia, diabetes, hypothyroidism and other factors, for the cause of taking atorvastatin, metformin and other drugs to treat, the efficacy varies from person to person, there is no such thing as the best drug. 1. Hyperlipidemia: Long-term large amount of eating fat content, carbohydrate content is too high food, lack of exercise, long-term late night and other factors lead to blood cholesterol, triglyceride content, so will blood viscous. It is recommended that patients take oral simvastatin, atorvastatin, fenofibrate and other drugs. 2. Diabetes mellitus: lack of insulin or (and) reduced insulin sensitivity leads to disorders of sugar, lipid and protein metabolism, so the blood will be sticky. Eat metformin, gliclazide, dagliflozin and other hypoglycemic drugs are better. 3. Hypothyroidism: Due to insufficient synthesis of thyroid hormone by the thyroid gland, resulting in low cellular energy metabolism and accumulation of fat, so the blood will be thick. Patients are advised to take levothyroxine sodium tablets for treatment. Note that the above drugs should be used under the guidance of a physician.