We are eating hybridized and genetically modified (GMO) foods full of antibiotics, hormones, pesticides, and additives that were unknown to our immune systems just a generation or two ago. The result? Our immune system becomes unable to recognize friend or foe - to distinguish between foreign molecular invaders we truly need to protect against and the foods we eat or, in some cases, our own cells. In Third World countries where hygiene is poor and infections are common, allergy and autoimmunity are rare.