The harm can't be said, but generally things that lose weight quickly have some influence on the body. At present, there are no health care products to lose weight in China, and the weight-loss drugs on the market are all foods, so the curative effect cannot be guaranteed, even if it is effective for some people. Bitter gourd has a certain weight loss effect, and you can also drink oolong tea and Pu 'er tea. A few days ago, I went to a health care product factory to contact students for internship. I heard that drinking Leigonggen tea can also reduce weight, and now the products are out of stock.