A palmar atd angle greater than 45deg; is a specific appearance of mental retardation congenital dysgenesis (21 III sign, Down syndrome) due to chromosomal abnormalities. This symptom is present in approximately 40% of patients. Mental retardation (mentalretardation) is a syndrome characterized by an individual’s significantly lower intellectual functioning than that of his or her peers, accompanied by difficulties in social adjustment, due to mental retardation, impaired or blocked intellectual development before maturity (usually before the age of 18). Patients with palmar atd angle greater than 45° should eat more vegetables and fruits, especially dark vegetables; appropriately increase the intake of seafood, such as kelp, seaweed, sea fish, etc.; eat more potassium-rich foods; it is appropriate to eat calcium-rich foods; eat more vitamin C-rich foods. Pay attention to the control of caloric energy, control the intake of staple foods and fat, eat as little as possible or do not eat candy snacks, sweet drinks, fried foods and other high-caloric energy foods; reduce the amount of salt used in cooking, and eat as little as possible soy sauce and other salt-cured foods. Eat less fatty meat and various animal fats, control animal brains, fish roe and other high cholesterol foods; avoid drinking too much alcohol. The following foods are recommended not to eat or eat less: 1, fried foods are high-calorie, high-fat content of junk food, increasing the body’s metabolic burden, the accumulation of fat can increase the risk of cardiovascular disease. For hypertension and high blood pressure is not conducive, so should be appropriate to avoid eating as appropriate. 2, small pepper fat meat containing animal fat is particularly high, more fatty meat easy to make the body fat accumulation, body obesity, lipid elevation, resulting in atherosclerosis. Long-term high blood pressure people avoid eating fatty pork. Pickled food The content of salt is high, eating too much salt is an important cause of hypertension. The amount of salt consumed is directly related to blood pressure. Anyone suffering from hypertension, do not eat more salt. 3, drinking alcohol The alcohol content in white wine affects the synthesis of endogenous cholesterol in the liver, which increases the concentration of plasma cholesterol and triglycerides, causing atherosclerosis. It can also cause the deposition of fat in the heart muscle, which enlarges the heart and causes hypertension and coronary heart disease. Those who suffer from hypertension, do not eat more spirits. 4, candy snacks food if the sugar content is too high will make the human blood vessel viscosity increases, thus affecting the rising blood pressure. So hypertensive patients in the usual diet to pay attention to limit sugar, try not to eat or eat high sugar content of desserts. It is recommended that staple foods should be coarse and fine, not limited to eating rice and noodles, but also often eat corn, beans, millet and so on. It is best not to eat or eat less fritters, doughnuts, fried cakes, cream cakes, chocolate, milk ice-cream, etc.