Food sensitivity and/or food intolerance is believed to be the underlying cause for many gastrointestinal disorders as well as even behavioral disorders. Food sensitivity is different than a food allergy in that usually, the sensitivity to the food is caused by GI permeability whereby food molecules (usually proteins) enter the bloodstream causing the body to treat the food as an allergen. What results is GI discomfort, bloating, gas, diarrhea, or secondary problems, e.g. behavioral problems, skin aberrations (acne, rash).