The common factors of high LDL include irrational diet, lack of exercise or obesity, bad life habits or pathological factors. High LDL can easily cause atherosclerosis, which is the main cause of coronary heart disease, stroke and other diseases. 1. Dietary irrationality: saturated fatty acids and trans fatty acids are the main cause of high LDL in the body, such as animal fat (pig, cow, sheep, etc.), dairy fat such as cream, butter, etc. are the main source of saturated ester fatty acids, fried food and other foods contain a high concentration of trans fatty acids, too much of such food will increase the level of cholesterol, resulting in the elevation of low-density lipoprotein. 2. Lack of exercise or obesity: lack of exercise or obesity, the body will accumulate a lot of calories, these calories are higher than the body’s actual needs, the body will store excess calories as fat, resulting in high triglycerides, but also can cause high LDL. 3. Bad habits: smoking and drinking a lot of alcohol can cause high LDL. 4. Pathological factors: physical diseases, such as hepatitis, weaken the liver function, the liver can not properly decompose protein, resulting in high protein. In case of elevated LDL, one should consult a doctor in time and take intervention and treatment under the doctor’s guidance.