In nutrition, sweet potato is a kind of high-quality coarse-grain potato food with high fiber. Sweet potato is rich in starch, dietary fiber, carotene, vitamins A, B, C and E, as well as potassium, iron, copper, selenium, calcium and other trace elements 10 and linoleic acid. With high nutritional value, it is called the most balanced healthy food by nutritionists. These substances can maintain the elasticity of blood vessels and are very effective in preventing and treating habitual constipation in the elderly. Unfortunately, most people think that eating sweet potatoes will make people fat and dare not eat them. In fact, on the contrary, eating sweet potatoes will not only make you fat, but also help you lose weight, keep fit, prevent sub-health, and relieve constipation and detoxify. Every100g of fresh sweet potato contains only 0.2g of fat, which generates 99 kilocalories of heat energy, which is about 1/3 of that of rice. It is a good food with low fat and low heat energy, and it can effectively prevent sugar from transforming into fat, which is conducive to weight loss and bodybuilding. Sweet potato contains a lot of dietary fiber, which cannot be digested and absorbed in the intestine. It can stimulate intestinal tract, enhance peristalsis, relieve constipation and detoxify, especially for senile constipation.

When people cut sweet potatoes, they will find a white liquid oozing from the skin. Mirabilis jalapa in this white liquid has a slowing effect. The combination of dietary fiber and the "sweet" effect of mirabilis jalapa makes the laxative effect of sweet potato have a good effect of no hurry and no delay.

The disadvantage of sweet potato is that protein and fat are insufficient, but the living conditions of modern people have improved, and the diet tends to be big fish and big meat, and protein and fat are often excessive. Eating sweet potato can neutralize this problem. So we'd better find some other food to match, so as to help our body maintain the corresponding circulation, and finally our body can be very thin, instead of being as thin as a skeleton.