Recently, a new Swedish study suggests that behaviors such as parents washing dishes by hand instead of using the dishwasher and feeding their children food bought directly from the farm may inadvertently reduce the likelihood of their children developing allergies. The idea is that children raised in an especially clean environment have a higher risk of developing allergic diseases. The study, which investigated the lives of about 1,000 young children and their parents in the Gothenburg region of Sweden, reportedly found that children raised in homes where dishes were always washed by hand had half the rate of allergies as those raised in dishwashers. But the researchers state that these findings only indicate a link, not a causal relationship, so it remains unclear whether these behaviors can directly lead to fewer allergies. The researchers hope that these behaviors will expose children to harmless bacteria and thus boost immunity. Allergies are a response of the body’s immune system to external substances. If a baby’s immune system is rarely exposed to these things, then when it is, there is the potential for problems. Many people are “offended” by specific foods, objects, and various hairs, and once exposed, they can trigger a metabolic reaction (commonly known as an “allergy”) in the body, ranging from numbness in the mouth, itchy skin, and red rashes, to severe cases that can lead to edema in the throat, difficulty in breathing, and Asphyxiation. At present, there are about 300–600 million allergic patients in China, and the incidence of allergic diseases is 20%–40%. The incidence of the disease is higher in developed countries and regions than in developing countries, higher in cities than in villages, and higher in polluted areas than in non-polluted areas. In developing countries, the increase in allergies is associated with an urbanized lifestyle, and rural children are less likely to suffer from allergic diseases; in cities, children of well-off families are more likely to suffer from allergic diseases than children of the lower paid classes. The cleaner the environment in which children grow up, the more they lack slow contact with allergens, so their bodies are prone to allergic reactions. From this perspective, the more “sophisticated” they are, the more likely they are to develop allergies. Parents should encourage their children to go outdoors and be more in touch with nature, which is equivalent to being vaccinated and having some resistance to allergies after being exposed to these things. This is very beneficial to the improvement of the immune system of the child. In addition, allergic diseases are not only related to sanitary conditions. In life, the incidence of allergic diseases is indeed related to exposure to allergens, but also to air pollution, diet structure and other factors. The air pollution in developed countries and regions is more serious and the diet structure is more refined, which is also an important reason for the high incidence of allergic diseases. For people with frequent allergy symptoms, the most convenient way is to go to the hospital for allergen testing to find the allergen and avoid contact with it. If you can maintain complete “isolation”, the allergy will disappear immediately. If someone is in anaphylactic shock, they should be taken to the hospital immediately and CPR should be performed promptly. Life’s “five allergens” 1, inhalation allergens: such as pollen, willow, dust, mites, animal dander, oil smoke, paint, car exhaust, gas, cigarettes, etc.. 2, ingested allergens: such as milk, eggs, fish and shrimp, beef and mutton, seafood, animal fat, allogeneic proteins, alcohol, drugs, antibacterial agents, anti-inflammatory drugs, fragrance oil, fragrance, onion, ginger, garlic, and some vegetables, fruits, etc. 3, contact allergens: such as cold air, hot air, ultraviolet light, radiation, cosmetics, shampoo, detergent, hair dye, soap, chemical fiber products, plastic, metal jewelry, bacteria, mold, viruses, parasites, etc. 4, injectable allergens: such as penicillin, streptomycin, heterologous serum, etc. 5, self-tissue antigens: mental tension, work stress, microbial infection, ionizing radiation, burns and other biological and physical and chemical factors that change the structure or composition of self-tissue antigens, as well as self-hidden antigens released due to trauma or infection.