What can the elderly eat to strengthen their brains?

　　Many middle-aged people have the feeling that their memory is not as good as when they were young. However, if middle-aged people pay attention to brain health, they can effectively delay the aging process of the brain. Here are some tips to help:
　　
　　Enter more information. “"Use it or lose it" is a universal law of development in the biological world, and the same is true for the human brain. People often say that "the more you use your brain, the smarter it becomes." There is a scientific reason for this. Studies have proven that people who use their brains frequently are 50% more intelligent than those who use their brains less. Even in old age, some people still have quick thinking, amazing memory, and undiminished creative inspiration. People who are lazy to use their brains will have slow thinking and memory loss in middle age.
　　
　　Make sure you get enough sleep. brain at work nerve Cells are in an excited state and consume a lot of energy, which can lead to fatigue over time. During sleep, brain cells are in a suppressed state and the energy consumed is replenished to help restore energy. The length of sleep varies from person to person and cannot be generalized. As long as you feel energetic the next day, you have slept enough.
　　
　　Eat more brain-friendly foods. The brain accounts for 2% of the body weight, but consumes 20% of the total energy consumption of the human body, 85% of which is Grape sugar. Glutathione in protein can improve the vitality of brain cells and prevent the aging of brain nerve cells. Foods such as animal liver and fish are rich in glutathione and amino acids required by the brain. The brain also "prefers" lecithin. Lecithin can produce acetylcholine in the body, which is the "messenger" that transmits information between brain cells and is crucial for enhancing memory. Egg yolks and soybeans contain more lecithin. In addition, the brain cannot absorb the above-mentioned nutrients without the help of B vitamins and trace elements such as iron, zinc, selenium, and copper. They are important components of brain nutrient-decomposing enzymes. To absorb these nutrients, you can eat more green leafy vegetables, beans and their products, citrus, carrots, black fungus, animal offal, etc.
　　
　　Maintain an open-minded and optimistic attitude. You should maintain a positive mental state at ordinary times, because a happy mood is conducive to the coordination and unity of the nervous system and various organs and systems, keeping the body's physiological metabolic process in the best state, feedback to enhance the vitality of brain cells, and is also beneficial to strengthening memory and improving brain efficiency.
　　
　　develop sports exercise habits. For middle-aged intellectuals who often work continuously at their desks, developing the habit of physical exercise is of great significance. Because physical exercise can regulate and improve the excitation and inhibition processes of the brain center, promote brain cell metabolism, enable brain functions to be fully exerted, and delay brain aging.
　　
　　Prevent brain function damage. Long-term excessive drinking can damage brain cells, leading to memory and mental decline. Smoking also accelerates the aging of brain cells. a lot slow sexually transmitted diseases , Infectious diseases, especially viral infections, hypertension, arteriosclerosis, pulmonary heart disease, kidney disease, etc., will cause brain cell damage accordingly, so attention should be paid to prevention and treatment.