Food intolerance is often confused with food allergy, but they are not the same thing. The biggest difference is that a food intolerance does not involve the immune system.
Instead, it usually happens when the body has trouble digesting a certain food. A common example is lactose intolerance. Someone with lactose intolerance does not produce enough of the enzyme needed to break down lactose, the sugar found in milk. The result can be bloating, gas, stomach pain, or diarrhea.
While uncomfortable, food intolerance is not life threatening. It does not cause anaphylaxis and does not require epinephrine.
With a food allergy, even a small amount of the food can cause a serious reaction. With an intolerance, symptoms are often dose dependent. A small amount might be tolerated, while a larger amount causes discomfort.
That said, both can significantly impact quality of life. If certain foods consistently make you feel unwell, it is worth talking with your doctor to figure out what is going on.
Understanding the difference between food allergy and food intolerance helps families respond appropriately and avoid unnecessary fear while still taking symptoms seriously.
