Sweet potato is rich in potassium, beta-carotene, folic acid, vitamin C and vitamin B6, all of which help to prevent cardiovascular diseases. Potassium contributes to the balance of liquid and electrolyte in human cells and maintains normal blood pressure and heart function. β -carotene and vitamin C have the effects of anti-lipid oxidation and prevention of atherosclerosis. Supplementation of folic acid and vitamin B6 is helpful to reduce the level of homocysteine in blood, which can damage arterial blood vessels and is an independent risk factor for cardiovascular disease.

Sweet potato has always been regarded by nutritionists as a balanced food with the same origin of medicine and food. Its calories are only one-third of that produced by the same weight of rice, and it contains almost no fat and cholesterol. Eating sweet potatoes regularly is beneficial to human health and has a certain weight loss effect. But don't eat too many sweet potatoes at a time to avoid abdominal discomfort such as heartburn, acid reflux or bloating.

2, sweet potatoes prevent lung qi.

Smoking too much may lead to the symptoms of emphysema, and friends with emphysema can eat more sweet potatoes to relieve it. Sweet potato is rich in vitamin A. Eating more sweet potato can effectively reduce the incidence of emphysema.

3, sweet potato has anti-cancer effect.

The most anticancer nutrients in the diet are β -carotene (the precursor of vitamin A), vitamin C and folic acid, and the contents of the three are rich in sweet potatoes. A small sweet potato (about 2 times) can provide twice the daily vitamin A, one third of the daily vitamin C, and about 50 micrograms of folic acid. The content of dietary fiber is higher than a bowl of oatmeal. The antioxidant effects of β -carotene and vitamin C are helpful to resist the damage of oxidative stress to genetic material deoxyribonucleic acid (DNA) and play a certain anti-cancer role.

Eating sweet potatoes regularly helps to maintain the normal folic acid level of the human body, and low folic acid content in the body will increase the risk of cancer. Sweet potato has high dietary fiber content, which can promote gastrointestinal peristalsis and prevent constipation and colorectal cancer.