Yellow skin refers to a dark epidermis, a yellowish and dull complexion, and can be caused by a variety of factors. There are many reasons for yellow skin, one of which is a poor diet. Many foods such as mangoes, oranges, carrots and pumpkins contain carotenoids. If too much is consumed over a period of time, the carotene level in the blood will be too high and the skin tone will change, first on the skin of the hands and feet, then on the face and even the whole body. If you take medicines with yellow pigments such as adiponectin for too long, it will also lead to excessive deposits of yellow pigments in the body, which will be reflected in a yellowish skin tone, which will recover after stopping the medicine. The health of the liver and gallbladder also has a greater impact on human skin tone. If the liver and gallbladder are not in good condition, the high bilirubin content in the blood will also show on the skin, making the skin yellow. In addition, the normal production of human pigment if not timely discharge, will also accumulate in the body, over time to make the skin tone darker, yellow color. The skin will also be dull and yellow if you stay up late or have poor toxin excretion in your body. It should be adjusted according to your own situation. Yellow skin may be caused by improper diet or long-term medication, or may be a problem with the liver and gallbladder organs, or usually poor rest, poor physical condition, etc., to specific conditioning.