This year's National Day holiday coincides with the Double Ninth Festival. Caring for the elderly is a fine tradition of our Chinese nation. With the acceleration of the aging process in China, we attach great importance to the nutrition of the elderly. Compared with the Dietary Guidelines for Chinese Residents (2016), the new version of the guidelines also adds the guidelines for "elderly people" (older than or equal to 80 years old). It is our unshirkable responsibility to let every old person around us maintain their physical functions and maintain their physical and mental health through good diet and nutrition. We should pay attention to every detail of elderly nutrition. Today, let's talk about the role and impact of soy on the health of the elderly. Soybeans contain more phospholipids for cardiovascular health, including soybeans, black beans and green beans. Soybean is rich in protein (35% - 40%), the composition and proportion of essential amino acids are similar to animal protein, and it is rich in lysine, which is deficient in cereal protein. It is an ideal food complementary to cereal protein. Soybean fat content is about 15% - 20%, of which 85% is unsaturated fatty acid, 50% is linoleic acid, and the digestibility is high. It also contains many phospholipids that are conducive to cardiovascular health. Other phytochemicals contained in soybeans, such as soybean isoflavones, soybean saponins, soybean oligosaccharides, and soybean sterols, have positive effects on preventing cardiovascular diseases, osteoporosis, and improving menopausal symptoms of women, and can also reduce the risk of breast cancer in perimenopausal women. It is recommended that the elderly eat 15g soybean every day. In our country's dietary guidelines, the elderly are encouraged to regularly eat soybean and its products. The dietary guidelines recommend that the elderly eat 15g of soybeans every day, and the converted consumption of soybean products, such as the common North tofu is 44g, South tofu is 84g, vegetarian chicken is 32g, shredded tofu is 24g, dried tofu is 33g, soybean milk is 220g, and tofu brain is 400g. It is suggested that the elderly should take turns to eat these bean products every week and make them together with other ingredients, such as braised kelp with bean curd, dried bean curd with green vegetables and agaric, thousand pieces of mushroom soup, cabbage, tofu and meatball soup. Soybean milk does not contain cholesterol. It is suitable for the elderly to drink soybean milk. Its protein is equivalent to that of milk. It is easy to digest and absorb. Its saturated fatty acids and carbohydrates are lower than that of milk. It does not contain cholesterol and contains rich phytosterols. It is suitable for the elderly and patients with cardiovascular diseases. However, soybean milk cannot replace milk because its calcium, vitamin B2, zinc and selenium are lower than that of milk. Therefore, it is recommended to drink soybean milk and milk every day. When making home-made soybean milk, it should be noted that raw soybean milk or uncooked soybean milk contains anti nutritional factors, which may cause gastrointestinal symptoms such as nausea, vomiting, abdominal distension and diarrhea. Therefore, soybean milk must be thoroughly boiled during production. (Outlook New Times)