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. Pay attention to steaming and cooking sweet potatoes.

2. Auxiliary blood pressure reduction

The auxiliary hypotensive effect of sweet potato is mainly attributed to its rich potassium. Because potassium and sodium are important elements that affect blood pressure, if the human body ingests enough potassium, it will promote the blood to discharge excess sodium; Eating foods rich in potassium will also promote the balance of mineral levels in the body, and ultimately play a certain role in assisting blood pressure reduction.

3. Auxiliary blood sugar control

It was found that the insulin sensitivity of patients with type 2 diabetes was effectively improved after taking sweet potato extract, which indicated that dietary fiber in sweet potato could effectively promote intestinal peristalsis, prevent constipation, delay postprandial blood sugar increase, and selenium could assist in regulating blood sugar.

4. Protect the cardiovascular system

Potassium, folic acid, vitamin A, vitamin B and carotene in sweet potatoes help to prevent cardiovascular diseases. Carotene and vitamin C help to resist oxidation and prevent atherosclerosis. Potassium contributes to the balance of cell fluid and electrolyte in human body; Folic acid and vitamin B6 help to reduce the level of homocysteine in blood.

5, enhance immunity

The content of protein in sweet potato is not high, but the amino acid structure is ideal, which can supplement many essential amino acids for human body. Moreover, sweet potato is rich in glycoprotein and mucin, which can effectively enhance the body's immunity and has a good anti-mutation effect. Mucin also has a special protective effect on human body, which can slow down organ aging and improve immunity.

6. Anti-aging

Sweet potato inhibits the production of melanin and prevents the appearance of freckles and senile plaques. Red can also inhibit skin aging, maintain skin elasticity and slow down the aging process of the body.

7. Fight cancer

The low folic acid content in the human body is easy to increase the risk of cancer. Eating sweet potatoes often not only helps to maintain the normal folic acid level of human body, but also helps to promote gastrointestinal peristalsis and prevent constipation and colorectal cancer.

8. Taboo:

(1) Sweet potato is rich in sugar, which is easy to ferment in the intestine and makes the abdomen uncomfortable. Chinese medicine believes that people with dampness blocking the spleen and stomach, qi stagnation and blood stasis should be careful to eat sweet potatoes.

(2) Sweet potato contains an oxidase, which easily produces a large amount of carbon dioxide gas in the gastrointestinal tract of human body, so patients with gastric ulcer should not eat it.

(3) Sweet potato has a high sugar content and is not suitable for diabetics.

(4) Eating sweet potatoes will stimulate a large amount of gastric acid secretion, making people feel heartbroken, and people with hyperacidity should not eat it.