According to the World Allergy Organization (WAO), about 30% to 40% of the world’s population suffers from one or more allergic diseases. These include allergic rhinitis, allergic conjunctivitis, allergic asthma and other diseases.
In other words, 1 in 3 people around us suffer from allergies.
As the temperature gradually rises, many friends can’t wait to get close to nature and feel the breath of spring.
While enjoying the beautiful spring, we were accidentally attacked by spring: itchy eyes, itchy nose, stuffy nose, sneezing, runny nose, and even Chest tightness, suffocation, coughing, wheezing, in fact, these are all manifestations of allergies!
As the saying goes, “Know your enemy and know yourself, and you will be safe in a hundred battles.” We must fully understand what allergies are? What factors can cause allergies? In order to do a good job of protection, Xiaohe Medical Code will answer you today:
Why do we have allergies?
When foreign substances enter the human body, most of them face three fates:
Substances recognized by the body as useful or harmless will live in harmony with the human body and will eventually be absorbed, utilized or naturally excreted.
Part of it is recognized by the body as useful or harmless substances, because the body has made a wrong judgment, and it will also overreact and cause allergic reactions.
When a substance is identified as a harmful substance, the body’s immune system responds immediately to expel or eliminate it, which is the protective effect of the immune response.
Why are people allergic