Pure enzymes are useless, but eating them won't hurt your health. Enzymes containing additives, long-term use will harm the body, but also easily lead to infertility. It's best not to use it, and enzymes are not cheap. Really not as slim as a big brand like Qiu. After you lose weight, you won't gain weight as long as you control your diet every day. Eating as much food containing cellulose as possible, such as vegetables and coarse grains, is helpful for thin belly to defecate. You can also do more exercise every day, which is good for your health. ! !