There's a lot of confusion over food allergies, intolerances, and other disorders with similar symptoms. So how can you tell the difference, and how many of us should be concerned? Learn more in this classic episode of BrainStuff, based on this article: https://health.howstuffworks.com/diseases-conditions/allergies/food-allergy/information/why-there-is-so-much-confusion-about-who-has-food-allergies.htm