A food allergy is when the body’s immune system reacts unusually to specific foods. 

Even a tiny amount of the allergy-causing food can trigger symptoms such as hives, swollen airways and digestive problems. Although allergic reactions are often mild, they can be very serious and cause severe symptoms or even a life-threatening reaction known as anaphylaxis.

Food allergy affects an estimated 8% of children under age 5 and up to 4% of adults.

It's important to differentiate between a food allergy and a food intolerance. A food allergy involves the immune system, while a food intolerance typically involves the digestive system,  causing symptoms such as bloating and tummy pain, and doesn't trigger an immune response. 

Diagnosing a food allergy is essential for preventing reactions, managing symptoms, improving quality of life, avoiding unnecessary dietary restrictions, and ensuring proper support and guidance for individuals living with food allergies.