In general, a total cholesterol of 6.89mmol/L is considered to be too high and requires prompt medical treatment. Total cholesterol refers to the total amount of cholesterol contained in the human blood. Normally, a total cholesterol value of more than 5.2mmol/L is considered high, while a value of more than 6.2mmol/L is basically recognized as hypercholesterolemia. In addition, total cholesterol is related to various factors such as age, gender, heredity and high-fat diet, etc. Meanwhile, high cholesterol is also a high-risk factor for atherosclerosis, coronary heart disease, diabetes mellitus and nephrotic syndrome. Due to the different underlying medical conditions and physical conditions of different patients, it is recommended to seek timely medical treatment, under the guidance of professional doctors, to clarify the specific causes of the disease and timely treatment to prevent delays in the condition, which may cause harm to the body.