People with food allergies are allergic to many foods. Food allergy makes people hyperactive. The most common chronic illnesses associated with food allergies are eczema and asthma. Allergy to food dye is common. They may occur in less than one of 100 children and in less than one of 500 adults.
Food allergy is lifelong, or is always outgrown.
However, allergies to peanuts, tree nuts, fish and shellfish are rarely outgrown. Once a true food allergy is diagnosed, it may be very hard to avoid the food causing it. If you have an allergy, you must read the labels on all the prepared foods you eat. Your doctor can help you learn how to avoid eating the wrong foods. Food allergy is not dangerous.