Everything you wanted to know about 7 Allergies

most common chronic diseases

Allergies are one of the most common chronic diseases. An allergy occurs when the body’s immune system sees a substance as harmful and overreacts to it. The substances that cause allergic reactions are allergens. When someone has allergies, their immune system makes an antibody called immunoglobulin E (IgE). Allergies occur when the body treats a harmless substance as a threat and the immune system produces an unnecessary response to it. In biomedical terms,

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