Food sensitivity is when you have a bad reaction to a food that is otherwise safe for everyone else to eat. Food sensitivities or intolerances primarily impact the digestive system, though they can also manifest in skin or respiratory issues such as rashes or a stuffy nose. When you have a food sensitivity, it means your digestive system has a hard time breaking down a particular food.
Unlike food allergies, food sensitivities aren’t life-threatening. If you live with a food sensitivity, you aren't required to restrict your diet as severely as you would with a food allergy. However, food sensitivities can still be problematic for those affected. You can have a food sensitivity for many years and not know, because symptoms don’t appear immediately. Gluten and lactose are probably the best-known triggers of food sensitivities.