Feelgoodagain
Dietitian in Bath, Somerset

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read moreWhat is an Allergy? An allergy can be the cause of that runny nose you've had for months, or your itchy eyes and that annoying rash. It happens when a usually harmless substance triggers your body's immune system to overreact. Substances in the environment, known as allergens, are the cause of allergic reactions. A special type of antibody (IgE) is produced by an allergic person's immune system to attack allergens which it believes to be harmful. As a result, other blood cells release more chemicals (including histamine), which when combined, cause the symptoms of an allergic reaction.