This document discusses food allergies and intolerances. It defines a food allergy as an adverse immune system response to certain foods. Common symptoms of food allergies include digestive issues, hives, swelling, and in severe cases anaphylaxis which can be life-threatening. Food intolerances are different in that they do not involve the immune system and may be caused by a lack of enzymes, contaminants, food additives, or psychological factors. The document provides examples of home remedies to help alleviate common symptoms of food allergies such as ginger, yogurt, foods high in vitamin C, castor oil, and apple cider vinegar.