It's good to lose weight with bitter melon powder. I bought bitter gourd slices at the drugstore and told them to grind them to remove oil. I put a lot of powder, and then I added a little water and a little honey. Drinking super oily yam powder in one breath is good for the kidneys. I don't think I've lost weight, but some people say I can. Our family always buys yam and cooks it in winter, which is very tonic.