Some pickled foods and processed meats contain a lot of nitrite, such as pickled sausages, bacon, bacon or ham sausages. It will combine with heme in meat to form nitroso, which has antiseptic effect. Nitrite is not toxic to the body, but it will react with amine compounds in the body to produce ammonium nitrite, which is a first-class carcinogen. In addition, nitrite can also combine with heme iron, affecting hemoglobin's transport of oxygen. In addition, eating too much food containing nitrate will reduce the body's digestion and absorption of iodine and easily cause goiter.

2. Trans fats

Foods containing hydrogenated vegetable oil contain a lot of trans fats, such as cream cakes and biscuits. There are also a lot of trans fats in milk tea, coffee, salad dressing, peanut butter and fried foods. Trans fats are resistant to high temperature and difficult to deteriorate, which can prolong the shelf life of food, make food taste more crisp, interfere with the normal fatty acid balance in the body, reduce cholesterol content and increase the risk of cardiovascular and cerebrovascular diseases. Try to eat less processed food or prepackaged foods in your life, reduce the frequency of eating out, and avoid frying or frying food repeatedly. When buying food, you should look at the nutrient composition table and choose foods that do not contain trans fatty acids.

3. Phosphate

Some sweet drinks only contain phosphate and sugar, and have almost no nutrients. Eating too much phosphorus-containing food will affect the body's absorption of minerals such as iron, zinc, magnesium and calcium, which will easily lead to iron deficiency anemia and osteoporosis.

4. Oxalic acid

Oxalic acid will hinder the absorption of calcium. Generally, there are a lot of oxalic acid in Umbelliferae and Amaranthaceae vegetables, such as spinach or amaranth. Scalding with boiling water before eating can remove more than 50% oxalic acid.

5. Aluminum metal

Expansive additives in food contain a lot of lead, only 65,438+00% aluminum enters the body and is excreted through feces or sweat, and the rest accumulates in the body, which will combine with protein and enzymes. If ingested for a long time, it will damage brain function and even cause dementia. In particular, it is more harmful to children, which can cause developmental retardation, intellectual damage and osteomalacia in children. So parents must choose a formal place to buy fried food or puffed food. In addition, eat less food containing aluminum, such as preserved eggs or popcorn, and avoid using aluminum pot or aluminum pot.

6. Synthetic pigments

Some brightly colored ice creams, drinks or desserts contain a lot of synthetic pigments. There are no nutrients in synthetic pigments, which will affect the body's absorption of zinc and chromium. If children consume too much synthetic pigment, it will affect brain development, cause attention deficit and hyperactivity disorder, and even disrupt metabolic function. Therefore, try not to buy colorful snacks for children. Look at the food ingredient list before buying, and give priority to those with less pigments and additives.