In fact, although some foods in our daily life are handed down by our ancestors, it is better to eat as little as possible. After all, in the past, medicine and technology were limited, and some harmful ingredients contained in many foods could not be detected. Even if they knew, they didn't know what harm it was to the human body. But because it tastes good and is easy to preserve, people used to like it very much.

Like pickles. Like the bacon we often see today, it belongs to the food handed down from ancient times. Pickled food actually drains water from meat through salt, and then dries it outdoors. Basically, there is not much water left and it is not easy to hatch. However, this kind of food is easy to cause cancer, which has a great impact on the body and will cause a burden on the body's detoxification system.

Then there is fried food. In the public's cognition, fried food will not only lead to excessive internal heat and obesity, but also lead to toxic substances and cancer due to inaccurate control of frying time. Therefore, even if fried food is delicious, it should be eaten as little as possible, otherwise, besides causing cancer, diseases such as hypertension and hyperlipidemia caused by obesity are not easy to treat.

Finally, the food in the freezer. We often like to store some meat food in the frozen layer, and it is full. In fact, it is because of insufficient ventilation and easy deterioration, thus causing a burden on the gastrointestinal tract and kidneys. Especially, frozen food should not be left for too long after it is taken out and thawed, otherwise the change of temperature will easily lead to the rapid deterioration of food.