What Causes Food Allergies?

Hannah Wangberg, MD, allergist and immunologist, Scripps Clinic Food allergies happen when the immune system overreacts to certain foods, triggering symptoms that can range from mild to life-threatening. Learn how to recognize these reactions and manage them effectively with expert guidance from Hannah Wangberg, MD, an allergist and immunologist at Scripps Clinic. Learn the difference between food allergy and food intolerance and when to seek medical evaluation and treatment.