Studies show that supplementing with Konjac Glucomannan Powder enhances the weight-loss effects of a calorie-restricted diet. It has a naturally unique physical effect on the body that allows the powder to expand up to 80 times upon digestion. This effect will allow you to feel full faster. Konjac root fiber can help you maintain a healthy weight level. Konjac flour is able to fight obesity, because the Konjac flour contains 0 calories compared to ordinary starches and foods.