While most food sensitivity or food intolerance symptoms in adults range from mild to moderate, food allergy symptoms can be severe — and in some cases, life-threatening. Symptoms of a sensitivity and an allergy can be similar, and it’s important to know the difference between an allergy and a sensitivity. A board-certified allergist can determine if testing for food allergy would be helpful to rule out the potential of a life-threatening issue. And a registered dietitian can guide a patient through an elimination diet safely and effectively to best diagnose and manage a food sensitivity.