High cholesterol without high triglycerides is also hyperlipidemia. High cholesterol without high triglycerides is hypercholesterolemia, and cholesterol is one of the components of blood lipids, so hypercholesterolemia is one of the conditions of hyperlipidemia; therefore, high cholesterol is hyperlipidemia even if triglycerides are not high. Patients with hypercholesterolemia should lower their serum cholesterol level through lifestyle intervention and treatment with lipid-lowering drugs such as simvastatin and atorvastatin to avoid more serious complications such as atherosclerosis, coronary artery disease, and cerebrovascular disease. It is recommended to standardize treatment under the guidance of a doctor when triglycerides are not high and cholesterol is high.