Are Food Allergies Causing Your Headaches?

If you find yourself having frequent headaches but can't pinpoint the cause, it could be something you ate. Food allergies create a number of symptoms, many of which don't show up until several hours after you've eaten something. Here is how what you eat may be causing that pain in your head. Allergens in Your Food A small number of foods account for 90 percent of all food allergies. However, these foods appear in many places making it hard to avoid one or more of these allergens.