Potato is regarded as one of the foods which contain most abundant nutrients all over the world. Americans even think that whole milk and potatoes can provide all the essential nutrients needed by the human body for people. Potatoes indeed contain abundant protein which contains 18 kinds of essential amino acid. In addition, adhesive protein contained in protein of potatoes can even help people prevent cardiovascular diseases. The content of vitamin B contained in potatoes is also rather high. 

However, the potatoes which have been germinant or rotten can cause the poisoning among people. Many people many the experience of eating such potatoes in everyday life, so they may be surprised at such a kind of result. In fact, potatoes contain a kind of toxin called in which is distributed in the parts of sprouting and rotting of potatoes. According to the research, each 2 kilograms of the tender shoot of potatoes contains nearly 5200 milligrams of solanin. If people absorb solanin, it can enter the blood inside the human body. Solanin can not only conduct hemolysis, but also benumb nervous centralis and stimulate the gastric mucosa to cause death. In addition, the structure of solanin is rather similar to that of steroid hormone inside the human body like estrogen and progestational hormone. If pregnant women always eat the potatoes containing a large number of alkaloids, the alkaloids can be accumulated inside their bodies to cause the fetal anomaly. Some people have predicted that if the pregnant women who are sensitive to alkaloids eat 44.2 to 252 grams of potatoes, the fetal anomaly can be caused. What's more, the content of alkaloids contained in potatoes can not be reduced by the normal cooking procedures like steaming and boiling.

Therefore, it is better for pregnant women to eat fewer potatoes or not to eat potatoes at all. Some pregnant women like to eat fried potato chips. Although fried potato chips have been processed in high temperature and the content of solanin can be reduced to some degree, this kind of fried potato chips contains too much oily fat and salt which can not only cause obesity but also induce the gestational high blood pressure and increase the gestational risks. Therefore, fried potato chips are also not suitable for pregnant women to eat.

Potatoes indeed contain abundant nutrients needed by the human body. However, because of a kind of special toxic, pregnant women must be rather careful when eating potatoes.