Green onions contain protein, carbohydrates and other vitamins and minerals, which are very beneficial to human body. Active ingredients such as onion volatile oil can stimulate human sweat glands and achieve the effect of sweating and cooling. Onions can also stimulate the digestion and secretion of the human body, enhance the appetite of the spleen and stomach and increase appetite. Allicin in onion has obvious resistance to bacteria and viruses, especially to Shigella dysenteriae and dermatophytes. Leek contains pectin, which can obviously reduce the occurrence of colon cancer and has anti-cancer effect. Allicin in onion can also inhibit the growth of cancer cells. Eating onions regularly also has the function of softening blood vessels and diluting blood, which is of positive significance for preventing coronary heart disease, stroke and cerebral arteriosclerosis.

Personal point of view. According to the different seasons of the year, there are different health preserving methods. Summer is a good season for detoxification and medical treatment. Don't be greedy for cold, blow less air conditioners, eat less cold food and drinks, and soak in boiling water with plants that clear away heat and detoxify. In winter, Tibetans are the main family, and they eat warm food, such as mutton, dog meat and tremella. Health-keeping has become people's spoken language, but few people really want to know the connotation of health-keeping and how to keep healthy. Most people think that health care is how to eat or go to a health center for massage. In fact, this is a misinterpretation of health, or a narrow understanding of health.

Health care does not simply refer to a certain aspect, for example, it is not just a matter of eating and drinking, but a complete system. Health literally conveys that "nurturing" means caring for the growth of things like raising children; "Life" is the existing process of life's birth, aging, illness and death.

Have a balanced mind, be contented, treat everything with a smile, respect others and love life. Practice until the energy flows down from the small belly, then rises along the back, passes through the top of the head, and then drops from the predecessor through the heart to the small belly, forming an endless cycle. Health preservation is to maintain a stable and comfortable mental state, maintain a good physical balance and health, develop a good routine, and develop regular eating habits. Health preservation is to save life, improve the quality of life as much as possible and enjoy a happy life.