Analysis of illness: The causes of emaciation are: mental factors, emotional factors, mental anxiety, irregular life, overwork, lack of sleep, physical exertion exceeding intake, etc., all of which can cause emaciation. Dietary factors and diseases can also cause it. Suggestion: Irregular diet, lack of physical exercise, lack of nutrition, especially the lack of protein ingredients are more likely to cause. Of course, there is pathological emaciation (caused by diseases). The common diseases that lead to emaciation include intestinal parasites, long-term active tuberculosis, anemia, diabetes, hyperthyroidism, malignant tumors, pituitary dysfunction and some metabolic diseases.