Experts pointed out that it is best to eat sweet potatoes at lunch time. This is because after we eat sweet potatoes, the calcium contained in them needs to be absorbed in the human body for 4 to 5 hours, and the afternoon sunshine can just promote the absorption of calcium. But it is best to eat sweet potatoes before lunch, so that calcium can be completely absorbed before lunch, and it will not affect the absorption of calcium in other foods at dinner. When we process sweet potatoes, we must steam them thoroughly, which will destroy the cell membrane of starch, because it is difficult to digest. In addition, if the gasification enzyme in sweet potato is not destroyed by high temperature, we will feel uncomfortable after taking it. [4] 1. Sweet potatoes with black spots are not suitable for eating. Sweet potato black spot virus with black spots is not easy to be destroyed and killed by high temperature, and it is easy to cause poisoning, resulting in a series of poisoning symptoms such as fever, nausea, vomiting, diarrhea and even death.

2. Sweet potato should not be eaten with persimmon at the same time. The main component of sweet potato is starch. It will produce a lot of fruit acid after eating. If eaten with persimmon at the same time, fruit acid can condense with persimmon tannin and pectin to form gastrolith. If you eat too much, it should be at least five hours apart. If eaten at the same time, the sugar in sweet potato will ferment in the stomach, which will increase the secretion of gastric acid and precipitate and condense with tannin and pectin in persimmon to produce lumps. When the amount is serious, it can cause gastrointestinal bleeding or gastric ulcer. If you feel upset in the stomach, you must go to the hospital for gastroscopy to see if there is stomach bleeding or gastric ulcer.

3, sweet potatoes should be appropriate.

Sweet potato contains an oxidase, which easily produces a large amount of carbon dioxide gas in human gastrointestinal tract. Eating too much sweet potato will make people bloat, burp and fart. Sweet potato has a high sugar content. Eating too much will produce a lot of stomach acid, which makes people feel heartbroken.

The stomach is stimulated by acid and its contraction is strengthened. At this point, the myocardium at the junction of stomach and esophagus is relaxed, and the acid in the stomach flows back to the feeding tube, so people spit acid water. Too much sugar can't be absorbed by the body for a while, and the rest will ferment in the intestines and make the stomach uncomfortable.

So the popular sweet potato regimen is not suitable for everyone. If you have diarrhea after eating it, don't force it. Eating brown rice will have the same effect.

4, baked sweet potatoes do not eat skin.

Now roasted sweet potatoes is on sale in the street, and you can smell the sweetness of sweet potatoes from a distance, so sometimes you can't resist the temptation. The burnt skin of roasted sweet potatoes is welcomed by everyone, and many people eat it together. However, experts pointed out that it is best not to eat baked sweet potatoes together with the skin. Sweet potatoes contaminated by black-spotted bacteria are not easy to distinguish after baking, so don't eat black-spotted or burnt sweet potatoes, which may cause poisoning.

Second, the precautions for eating sweet potatoes

1, not eaten raw

The starch in raw sweet potatoes is difficult to digest and must be steamed or roasted. Advocate cooking methods and use less frying. 2, sweet potato porridge ate, the stomach does not flatulence

Sweet potato easily produces a large amount of carbon dioxide gas in the gastrointestinal tract. Eating too much will make people bloat and burp. Sweet potato contains a lot of sugar, which will be fermented and accumulated in the intestine, and it will also cause discomfort such as abdominal distension.

When eating sweet potatoes, it is best not to drink water while eating, or add a small amount of sweet potatoes to rice porridge to relieve gastrointestinal discomfort.

Third, sweet potato is a good food for patients with skin allergies:

Take more vitamin C, because the lack of vitamin C can easily make the skin rough and dry, leading to sensitive injuries such as dermatitis and peeling. Among the fruits and vegetables rich in vitamin C, pears and kiwifruit are better. Eating more can strengthen skin tissue and help fight against external sensitivity. Eat herbal tea and other foods that clear away heat and reduce fire. Sweet potato is rich in nutrition, and protein, cellulose and vitamins are all needed by people with allergic skin. So people with allergic skin can eat sweet potatoes.