Drinking tartary buckwheat tea will not gain weight. It has the ability of lowering blood sugar and blood fat, and at the same time it can enhance human immunity, so it has many functions. Buckwheat tea not only won't gain weight, but also helps to relieve constipation, which may not be helpful to lose weight. Therefore, it is beneficial to drink tartary buckwheat tea often. "You can choose some local old brands and big brands. I have been cooking bitter buckwheat like Qiongchi for more than twenty years.