The possible clinical causes of high total cholesterol in pregnant women include over-nutrition, lack of exercise and abnormal physical condition. 1. Excessive nutrition: Pregnant women supplement too much cholesterol-rich food in their daily diet, and the intake exceeds the amount needed by the mother and the fetus, thus causing their total cholesterol to be high. 2. Lack of exercise: the amount of exercise during pregnancy will be reduced, thus the metabolic rate of the body will be slowed down and the consumption of lipids will be reduced, if excessive intake of nutrients during pregnancy, this situation may cause high total cholesterol or make the relevant indicators rise. 3. Physical abnormality: pregnant women have abnormal metabolic function, lipid metabolism also have corresponding problems and make the body’s lipid consumption will be reduced; or pregnant women have a genetic history of lipid metabolism. All of the above situations may cause the total cholesterol of pregnant women to be high, and it is recommended to consult a doctor in time.