There is a distinct difference between a food allergy and a food sensitivity. A food allergy, like a peanut allergy, causes an immediate anaphylactic reaction that can include hives, swelling and difficulty breathing. A food sensitivity usually doesn’t cause an immediate reaction. Usually it can cause cramping and bloating a few hours later, but not necessarily. Sometimes the effects are not even gastrointestinal in nature but create other reactions including neurological dysfunction. The most dangerous part of food sensitivities is that they cause an underlying inflammatory immune reaction that can trigger and/or exacerbate autoimmune diseases like Hashimoto’s hypothyroidism.