Thin people drink probiotics do not necessarily gain weight. The role of probiotics is to balance the intestinal flora, regulating the intestinal environment if the intestinal flora imbalance, resulting in poor digestion and absorption caused by the body thin, drink probiotics to regulate the intestinal environment, is conducive to the digestion and absorption of food, for the absorption of poorly caused by the thin people to gain weight may have a certain role in assisting. To gain weight can not rely solely on the use of probiotics, usually to strengthen the exercise, improve their physical fitness, strengthen nutrition, balanced diet, from a variety of food intake of a variety of nutrients. There are many reasons for wasting, and you need to find the cause of wasting, such as peptic ulcer, hyperthyroidism, diabetes, etc., and you need to treat the primary disease to solve the problem of wasting. It is recommended to take probiotics under the supervision of a physician.