Many people may be troubled by such a confusion: they have already paid great attention to the health care, however, there are always certain problems occurring in their body. In fact, these problems are caused by the diets, as certain kinds of food in our daily life may gradually cause invisible damage to our body. Following are some typical examples of these foods.

First, pickled foods
In the pickling process, it needs to add a lot of salt. Too much salt will increase the burden on the kidney. In addition, the high concentration of salt can seriously damage the gastrointestinal mucosa. As a result, those who often eat pickled foods tend to have higher morbidity of gastrointestinal inflammation and ulcer. And the most important thing is, eating too much pickled foods will lead to premature aging of the women.

Second, canned foods
No matter it is canned fruit or canned meat, the nutrients in them all have been largely damaged, especially all kinds of vitamins. In addition, the protein in the canned products has always been denatured, which will greatly reduce its digestibility, and its nutritional value is also greatly "diminished." What's more, a lot of canned fruits contain high sugar, so it may greatly increase blood sugar, and add the burden on pancreas. Meanwhile, because canned foods contain high calories, so they will easily cause obesity.

Third, processed meat products
Such foods contain a certain amount of nitrite, so it may lead to the potential risk of cancer. In addition, processed foods contain preservatives, toner and color retention agent, all of which will increase the burden on human liver. Moreover, foods such as ham are rich in sodium. Eating too much of these foods can lead to excessive salt intake, resulting in blood pressure and renal function impairment.

Fourth, fried foods
Such high-calorie foods contain high fat and oxidative substances, which will easily lead to obesity if eating too much of them. It is the most dangerous food to cause hyperlipidemia and coronary heart disease. In the frying process, there are often a large amount of carcinogenic substances produced. Researches have shown that people who often eat fried foods are much easier to suffer from some kinds of cancer than those who do not or eat little fried foods.

What's more, others factors such as lipid peroxide, incrustation, as well as high temperatured oil and smoke are all harmful to human health. As a result, we should to pay more attention to our diets in daily life and keep away from those foods which may threaten human health.