Why is the incidence of allergies and asthma increasing among children in metro cities of India?

Step-by-step solution

The exaggerated response of the immune system to certain antigens present in the environment is called allergy. The substances to which such an immune response is produced are called allergens. The symptoms of allergic reactions include sneezing, watery eyes, running nose and difficulty in breathing Modern-day life style has resulted in lowering of immunity and more sensitivity to allergens – more and more children in metro cities of India suffer from allergies and asthma due to sensitivity to the environment. The