Mouth-exploring objects (mouth-exploration disorder), seen in Alzheimer’s disease dementia. Alzheimer’s disease dementia used to be referred to as progeria for those with onset before the age of 65 and senile dementia for those with onset after the age of 65. What are the prevention methods of exploring with objects by mouth? 1, we should pay attention to rice, flour, corn, millet and other staple food to ensure the important source of caloric energy for brain cells, because brain cells can only use glucose as energy, so we are required to consume enough carbohydrates. Some people get up late in the morning, too late to eat breakfast, or have the unhealthy habit of not using breakfast. This makes a person in the morning in hunger, blood sugar is lower than the normal supply level, resulting in insufficient supply of nutrients to the brain. If this is often the case, it is bound to damage the health of the brain and thinking function. 2, pay attention to fat, especially the intake of essential fatty acids. Essential fatty acids are rich in soybean oil, sesame oil, peanut oil and other vegetable oils, unsaturated fatty acids. Brain 35% structure is protein, about 60% is lipid, so the choice of edible fats should not be underestimated. Memory enhancement and decline, essential fatty acids play a major role. In addition, soybean oil is rich in lecithin. Acetylcholine deficiency is the main cause of Alzheimer’s disease. The cause of memory loss in the elderly is related to insufficient levels of acetylcholine. Acetylcholine is a compound necessary for the transmission of information in the nervous system, and lecithin is the raw material for conversion to acetylcholine in the brain. If supplemented for a long time, lecithin can increase memory, thinking and analytical ability, make people smart, delay functional decline, and prevent or delay the onset of Alzheimer’s disease. Lecithin can also improve blood supply to the brain. In middle and old age, a large amount of serum cholesterol and neutral fat are deposited in the blood vessel wall, which obstructs blood flow and leads to insufficient blood supply to the brain, prompting the death of a large number of brain cells and easily causing senile dementia. Lecithin emulsifies serum cholesterol and neutral fat particles to a smaller size and keeps them in suspension, thus allowing blood vessels to flow smoothly and a constant supply of nutrients and oxygen to the brain. Because lecithin has these two major effects, medical doctors call it the nemesis of Alzheimer’s disease. Currently, Japanese scientists are proposing to extract lecithin from soybeans to develop a drug for Alzheimer’s disease. Foods rich in lecithin include soybeans and their products, fish brains, egg yolks, fish roe, pig liver, sesame seeds, yams, mushrooms, peanuts, etc. It should also be noted that fat is an important site in the body for estrogen production in addition to the ovaries. We know that older women are at high risk of this disease (1.5:1 to 2:1 for men:women). Recent findings show that postmenopausal women who received hormone replacement therapy had a higher density of nerve cells but a lower rate of cell membrane turnover, similar to younger women. The opposite was true for those who did not receive it, thus suggesting that hormone replacement therapy may soften the degeneration of local brain tissue affected by Alzheimer’s disease. Therefore, older women should not be vegetarian and should supplement with appropriate fats to alleviate the low estrogen caused by ovarian decline. 3. High intake of vitamin B12 and folic acid is beneficial in preventing Alzheimer’s disease. Researchers have analyzed blood samples from hundreds of subjects, showing that those with blood levels of vitamin B12 in the lower 1/3 of the normal range are more than three times more likely to suffer from Alzheimer’s disease; and those with similarly low levels of folic acid are two times more likely to suffer from the disease. This is because vitamin B12 deficiency can cause changes in the structure and action of transcobalamin I in the body. This leads to a failure of immunoglobulin production and a weakened ability to fight disease, which can seriously cause nerve cell damage. This study also found that people with vitamin B12 and folic acid deficiency had the highest concentration of cysteine (a potentially harmful amino acid), and those whose levels were at the upper 1/3 of the normal range were 35 times more likely to develop dementia. Therefore, special attention should be paid to adequate vitamin B12 and folic acid supplementation from food, which is convenient, effective, safe and economical. Foods rich in vitamin B12 include shellfish, eggs, milk, animal kidney and various fermented soy products (such as tofu milk); folic acid is widely found in various animal and plant foods, and folic acid-rich foods include green and yellow leafy vegetables, yeast, animal liver and kidney. 4, to pay attention to the brain supply indispensable trace elements and macronutrients. For example, iodine is an important component of thyroxine, lack of which will be irritable due to low thyroid function, weak interest, intelligence decline, iodine exists in a variety of seafood; zinc is the brain protein and nucleic acid synthesis necessary substances, when the body is zinc deficiency 48h that produces protein synthesis disorders, interference with cell division, resulting in a decline in intelligence. Foods with high zinc content include fish, meat, eggs and nuts; calcium, for the brain, can inhibit abnormal excitation of brain nerves, so that the brain into a normal work and life state. Conversely, the brain in the level of calcium deficiency, will cause emotional instability, so that the brain fatigue. Severe calcium deficiency will increase bone calcium leaching, causing calcium deposits on brain cells and their peripheral nerves, destroying and interfering with brain function and causing dementia. Calcium-rich foods include milk, beans, sesame paste, shrimp, fish, etc. Calcium deficiency also leads to aluminum deposition in brain cells, and the amount of aluminum in certain brain areas of Alzheimer’s patients is 10 to 30 times higher than normal. Aluminum is a powerful cross-linking agent that directly destroys genetic material within nerve cells, causing cellular crumpling, which can lead to broken interneural connections and cause memory damage. Foods containing more selenium include lamb, turkey legs, chicken liver, powdered beef milk, eels, mackerel, striped bass and other meat foods, all containing more than 30 mg per 100 grams; cabbage, onions and seafood are rich in content and available for consumption. 5, free radicals is the bane of dementia. Modern science has proved that the antioxidant nutrition of effective substances to destroy free radicals, mainly vitamin C, vitamin E, beta-carotene and selenium. Enzymes, or enzymes, are proteins that promote a series of chemical reactions in the human body. Enzymes are destroyed when exposed to heat. The enzyme that delays brain decline is peroxidase, the raw material of which exists in large quantities in the young stems of cauliflower, fresh peas and alfalfa. A deficiency of histidine enzyme, which affects learning and memory, is a wonderfully large natural resource that can be found in fresh fruit, especially apples.