Potatoes are rich in starch, but they cannot lose weight at all. They can eat fat people seriously. They say they can lose weight, because potatoes will feel full when eaten, so they are listed as diet foods. Eating too many potatoes will make you fat. Trust me, if you want to lose weight, eat less and eat more. Don't drink water after 9 o'clock for dinner. Drink more cold water before eating early, and try not to drink raw water or cold water.