Whether the yellowing of the skin is due to physical illness depends on the specific circumstances of the patient, and cannot be generalized. There are many reasons for yellowing skin, which can be divided into physiological and pathological factors, such as eating a lot of oranges or foods containing more carotene, which can lead to yellowing skin. The body is directly exposed to sunlight, by ultraviolet radiation, will also make the skin yellow, dull, also belongs to the normal physiological phenomenon, usually pay attention to do a good job of sun protection can, do not worry too much. However, if the yellowing of the skin is serious and accompanied by some other physical discomfort, it may be due to pathological factors, such as hepatitis, cholecystitis, spleen and stomach diseases, etc., you need to promptly go to the gastroenterology or hepatology department for examination, clear diagnosis and symptomatic treatment. In addition, the yellowing of the skin may also be due to irregular work and rest, often overtime and late nights, when the supplemental sleep, reduce the late night situation can be alleviated, and at the same time can eat more vitamin C-rich fruits and vegetables, help improve the skin condition.