LDL is a cholesterol-rich lipoprotein, and its content is 1/2 that of HDL. There are many reasons for low LDL content, firstly, the amount of exercise in daily life is too high, which exceeds the normal needs of the body, and the consumption of fat is too much, thus causing low LDL content. Secondly, the intake of nutrients from food is not enough, for example, people who lose weight for a long time eat less meat and consume less fat, which will cause low LDL content. Finally, abnormal liver function can also lead to low LDL content, which can be improved by medication, such as lutein, carotene and anthocyanin.