People are always troubled by the indigestible foods. However, they can not resist the delicious tastes of such foods. Generally speaking, the foods like ice cream and chocolate are all indigestible foods in daily life.

Ice cream contains abundant lactose which can affect the normal functions of stomach and intestines and hurt the spleen. The excessive intake of ice cream can even decrease the appetite, stimulate the stomach and cause the bellyache. If people can not quit the freezing foods, they can choose the foods without lactose. If possible, people should keep away from ice cream as far as possible.

Potato is the nutritional food containing low heat, high protein, various vitamins and trace elements. Many people like to lose weight by eating potatoes. Nowadays, mashed potatoes have become more and more popular. However, the mashed potatoes mixed with cream or cheese are not so healthy, as the cream or cheese can affect the normal functions of stomach and intestines. Therefore, people should choose the single mashed potatoes without any auxiliary materials.

Onion contains various kinds of nutritional elements which can protect the heart for the human body. However, at the same time, these elements can also cause some bad symptoms, such as flatulence and bellyache. According to the medical experts, these symptoms can be effectively avoided through some skillful cooking ways. For example, people can eat the cooked onion and uncooked onion together so as to absorb the nutrients and prevent bad symptoms at the same time.

Chocolate can not only produce much heat inside the human body, but also stimulate the stomach and intestines. It is relatively better for people to choose black chocolate, as the black chocolate contains various beneficial substances like calcium, iron and copper. Among all the kinds of chocolate, black chocolate contains lowest contents of sugar and fat. In addition, it can also deal with high blood pressure and atherosclerosis. No matter how the nutritional value of the black chocolate is high, people should eat it moderately.

Fried food contains high content of oily fat and high fat. These two kinds of substances can be accumulated inside the stomach to cause diseases. The oily fat will produce a kind of substance called “acrylic acid” in the high temperature which is rather difficult for people to digest. The patients with gastroenteritis should decrease the intake of oily food in daily life so as to prevent possible danger.