Introduction: People need to get nutrients from food every day. However, some foods are known as "dumbing-down foods," and frequent consumption can make you less smart. Experts point out that if food contains lead, aluminum, etc., it can lead to memory loss, decreased intelligence, and slow thinking.
1. Foods containing lipid peroxides
Lipid peroxides can damage certain metabolic systems, destroy brain cells, and promote premature aging or dementia of the brain. They are commonly found in foods high-temperature fried or exposed to sunlight for long periods, such as smoked fish and roasted duck.
2. Foods containing aluminum
Aluminum can inhibit the activity of brain enzymes, gradually reduce human memory and thinking ability, and even induce dementia. The alum in fried dough sticks is an aluminum-containing inorganic substance and should not be eaten in excess; also, avoid using aluminum cookware for cooking food.
3. Foods containing lead
Lead is a major killer of the brain. When you eat lead-containing foods, such as popcorn, century eggs, and canned foods, lead enters the brain through the blood, causing insufficient oxygen and nutrient supply to the brain, damaging brain cells, leading to memory loss, and damaging brain tissue.
4. Too sweet foods
An excessive intake of sugar is not easily digested and broken down by the human body. Sugar seeps into the blood, damaging cells throughout the body, and can make the body's constitution acidic. Therefore, eating less sweet food, especially foods containing granulated sugar or saccharin, will make you smarter.
5. MSG seasoning
The main component of MSG is glutamic acid, which produces a substance that inhibits nerves during the human digestion process, affecting the nervous system and damaging brain tissue. In particular, infants and young children whose brains are not fully developed and pregnant women should avoid eating foods seasoned with MSG.
6. High-fat foods
The body requires a large amount of blood to metabolize the fat consumed. Over the long term, this can easily lead to insufficient oxygen in the brain, making thinking slow.
7. Foods containing pesticides
Most pesticides are neurotoxic, and long-term accumulation can easily lead to brain degeneration.
8. Overly salty foods
Frequently eating overly salty foods can damage arterial blood vessels, affecting the blood supply to brain tissue, causing brain cells to be in a state of ischemia and hypoxia for long periods, leading to decreased memory and premature aging of the brain. The daily salt intake for a normal adult should be controlled to below 5 grams.
9. Foods containing preservatives and coloring
Some foods contain preservatives, colorings, and flavor enhancers to improve taste and extend shelf life, which can also be harmful to the brain, such as canned foods, caffeinated beverages, bubble gum, and pastries containing artificial colors. Frequent consumption can lead to irritability, lack of concentration, decreased memory, and slow reactions.