HOW ARE ALLERGENS TAKEN INTO THE BODY?
These may be taken into the body in four ways: Through the nose, throat, and lungs, in the airborne substances we inhale. Pollen, house dust, and pet allergens (from dander, saliva and urine) and are prime examples. Through the mouth and digestive system, in the food, food additives, or drugs we ingest. Through the substances and chemicals that come in contact with our skin, such as poison ivy, cosmetics, grooming aids, and detergents. Through the tissues under the skin, via the chemicals injected into our bodies, such as vaccines, medicines (penicillin, antibiotics, and insulin), or by animal bites or insect stings.