Allergy is an immune reaction, an abnormal reaction of the human body to a specific substance. Symptoms include urticaria, allergic rhinitis, abdominal pain and diarrhea, etc.
Excessive cleaning will cause the loss of beneficial bacteria, lead to immune imbalance, and may easily lead to allergies. Most of the microorganisms in the daily environment are beneficial, and beneficial bacteria Living in the mouth, intestines, and respiratory tract for a long time forms the body's immune barrier. If the former is lacking, the latter is likely to occur more frequently.