A thought disorder is an abnormality in the amount and speed of associative thought activity. The clinical manifestations of thought disorders are diverse. Stagnant thinking means that the association is not easy to develop, showing obvious inertia, always entangled in the same problem. So what can you eat to prevent stagnant thinking? 1, folic acid-rich foods The lack of folic acid in the body increases the likelihood of dementia. Folic acid-rich foods include green leafy vegetables, citrus, tomatoes, cauliflower, watermelon, mushrooms (such as black fungus, mushrooms), yeast, beef, animal liver and kidney. 2, rich in nucleic acid food Nucleic acid is the basis of genetic material and dominates the function of cellular material metabolism. As we grow older, the “nucleic acid” in our bodies to slow down the aging process gradually decreases and needs to be replenished from food in time. Foods to prevent Alzheimer’s disease include fish and shrimp, mushrooms, fungus, pollen, fruits and fresh vegetables, etc. Vitamin A, vitamin C, vitamin E and B vitamins have special effects on slowing down the hardening of blood vessels and preventing brain aging and dementia. Eat more green vegetables and fresh fruits, can get rich vitamins. 4, rich in vitamin B12 food Research found that vitamin B12 deficiency, can make the body transcobalamin I structure and role changes, leading to immunoglobulin production failure, weakening the ability to fight disease, serious cases can cause nerve cell damage. Foods to prevent dementia include daisies, mushrooms, soybeans, eggs, milk, animal kidneys and various fermented soy products. 5, foods rich in lecithin The reason for memory loss in the elderly is related to the lack of acetylcholine content. Acetylcholine is a compound necessary for the transmission of information in the nervous system, and the human brain takes phospholipids and choline directly from the blood and converts them into acetylcholine. If supplemented for a long time, lecithin can slow down the process of memory loss and prevent or delay the onset of Alzheimer’s disease. Foods rich in lecithin include egg yolk and soybean products (especially soybean oil has the highest content).