Lead is a big killer of brain cells. Excessive lead content in food will damage the brain and cause mental retardation. Some children often eat popcorn because in the process of making popcorn, after the machine can is heated by high pressure, part of the lead on the surface of the soft lead pad in the inner layer of the can cover will become gaseous lead. In the process of making preserved eggs, raw materials contain lead oxide and lead salt. Lead has a strong permeability, and eating preserved eggs will also affect intelligence. Pregnant women drink too much beer, and lead in German liquid can reach the fetus through the placenta, which will damage the intelligence of the fetus. ?
Second, aluminum-containing foods.
The World Health Organization recommends that the daily intake of aluminum should not exceed 60 mg. If you eat 50 ~ 100 grams of fried dough sticks a day, it will exceed this allowable intake, leading to memory loss and mental retardation. Therefore, breakfast cannot be based on oil. Aluminum pot is often used in cooking, so we should pay attention to increasing aluminum intake when boiling water with aluminum pot. ?
Third, foods containing lipid peroxide.
Lipid peroxide is harmful to human body. If lipid peroxide is ingested from the diet for a long time and accumulated in the body, it will destroy some metabolic enzyme systems in the human body and promote premature aging or dementia of the brain. Which foods contain more lipid peroxide? There are mainly fried foods with oil temperature above 200℃ and foods exposed to the sun for a long time, such as smoked fish, roast duck and roasted goose. There is also the oil of fried fish and shrimp, which will quickly oxidize hala and produce lipid peroxide. Other foods, such as dried fish, bacon and oily foods, will produce lipid peroxides in the air. Children should not eat or eat less of these foods. ?
Fourth, foods containing more saccharin and monosodium glutamate.
The dosage of saccharin should be limited, otherwise it will damage cells and tissues such as brain and liver, and even induce bladder cancer. The World Health Organization recommends that adults eat no more than 4 grams of monosodium glutamate every day, and pregnant women and babies under one year old should fast. Animal experiments suggest that the consumption of monosodium glutamate by infants under one year old may cause brain cell necrosis. Eating more monosodium glutamate in pregnant women in the third trimester will cause zinc deficiency in the fetus, which will affect the physical and mental development of the child after birth and is not conducive to intellectual development. ?
Five, salty food
The physiological demand of human body for salt is extremely low, below 7 grams per day for adults and below 4 grams per day for children. People who are used to eating salty food will not only cause diseases such as hypertension and arteriosclerosis, but also damage arterial blood vessels and affect the blood supply of brain tissue, leaving brain cells in a state of ischemia and hypoxia for a long time, leading to mental retardation, memory decline and even premature aging.