Introduction: There are a lot of harmful foods in our daily diets, which may threaten the health of human body. If you do not pay attention and always eat these foods, it will cause serious damages on your body. Now let's look at these five kinds of harmful foods one by one.

First, margarine
In 1869, one chemist discovered the substitute for butter--margarine, which is much easier to be preserved. Although margarine has a variety of nice names, such as plant cream, dairy cream, vegetable cream, etc, in fact, they have a common chemical name--"trans fatty acids", which are likely to cause hidden dangers to human health, leading to diabetes, arteriosclerosis, cancer and other diseases.

Second, MSG
MSG is a kind of chemical seasoning. Its main component is glutamate, which can be decomposed into an inhibitory neurotransmitter in the human body. Excessive intake of MSG can inhibit the function of a variety of nerves in human body, thus leading to dizziness, headache, muscle cramps and other symptoms. What's more, MSG contains sodium. If you take in too much, it may cause high blood pressure.

Third, fried chicken
Fried chicken contains a high content of saturated fatty acids, which are the biggest enemy of the cardiovascular, because it can increase the cholesterol in human body, thus inducing high blood cholesterol, diabetes and other cardiovascular and cerebrovascular diseases. In addition, after the foods are fried at high temperatures, a lot of vitamins will also be lost.

Fourth, canned meat products
Nutrite is always used as a kind of coloring agent and preservative for the processing of meat, especially canned meat products. Excessive intake of nitrite can cause food poisoning, leading to headache, dizziness, chest tightness, shortness of breath, nausea, vomiting, abdominal pain, diarrhea and other symptoms. Long-term intake of nitrite may even cause cancer. In fact, in addition to the problem of nitrite, canned meat products also contain a high content of salt and fat, but lack of some nutrients such as vitamin B.

Fifth, instant noodles
The packaging box of instant noodles usually contain polystyrene. Polystyrene will produce carcinogenic substance at the temperatures over 65 degrees Celsius. As a result, it is a serious threat to human health. The sauce of instant noodles also contains food additives and preservatives. In addition, instant noodles lack of vitamins and mineral substances, but contain a large number of sodium glutamate, so it is not beneficial to the health of human body.