First, not greedy for meat. Too much meat fat in the diet of the elderly will cause imbalance in nutritional metabolism, and it is easy to suffer from hypercholesterolemia and hyperlipidemia, which is not conducive to the prevention and treatment of cardiovascular and cerebrovascular diseases. Second, not greedy for essence. Old people have long paid attention to eating white rice noodles. If they consume less cellulose, they will weaken intestinal peristalsis and be prone to constipation. Third, not greedy. The gastrointestinal digestion and absorption function of the elderly is weakened. If you eat hard or poorly cooked food, you will be prone to indigestion or stomach trouble over time. Fourth, not greedy. Due to incomplete tooth loss, if the elderly eat fast and chew hard, it will increase the digestive burden of the stomach. At the same time, it is also prone to accidents such as fishbone or fishbone throat. Fifth, not greedy. Old people should have an adequate diet. If they crave more for a long time, it will not only increase the burden of gastrointestinal digestion and absorption, but also induce or aggravate cardiovascular and cerebrovascular diseases and sudden death. Sixth, not greedy for wine. Drinking alcohol for a long time in the elderly will cause myocardial degeneration, lose normal elasticity and increase the burden on the heart. At the same time, the elderly drink more alcohol, which is easy to lead to cirrhosis. Seven, not greedy. Excessive sodium intake in the elderly can easily lead to hypertension, stroke, heart disease and kidney deficiency. Eight, not greedy for sweetness. Eating too much sweets in the elderly will cause dysfunction, obesity, diabetes, itchy skin, hair loss and consumption of pancreatic cells, which is not conducive to physical and mental health care. Nine, don't be greedy. Eating time of three meals should be sooner rather than later, which is conducive to food digestion and rest after meals, and avoids food accumulation or hypoglycemia. Ten, not greedy for heat. The diet of the elderly should be warm and not hot, because hot food is easy to damage the mouth, esophagus and stomach. If the elderly eat hot food for a long time, they are also prone to stomach cancer and esophageal cancer. Longevity elderly people have more than a dozen dietary experiences. More than ten: First, eat more fresh fruits and vegetables; The second is to eat more seafood; Third, eat more and eat less; Fourth, eat more protein food, such as eggs, milk, beans, etc. Fifth, eat more vegetable oils such as sesame seeds and peanuts; Sixth, drink more tea; Seventh, eat more iron-containing foods; Eight is to be vegetarian; Nine is to eat more fresh food, not bad food; Ten is to eat more digestible food. Ten less: First, eat less sweets; Second, eat less salt; Third, eat less animal fat; Fourth, eat less food with more dregs; Fifth, eat less greasy and sticky food; Sixth, eat less hard food; Seventh, eat less chemical seasonings; Eight is to drink less; Nine is to eat less spicy food, but a proper amount of ginger and garlic is beneficial; Ten is to eat less, and 70% full is not appropriate.