Is that stomach ache food poisoning or an allergic reaction?

Ever ate something that later causes a stomach ache? Then the questions being. Was the food bad? Can my body suddenly not process gluten or dairy or other food groups? A new study shows that what we may think is food poisoning may actually be an allergic reaction, as more and more adults are developing life-threatening food allergies. Read more for information on the signs and symptoms we should be looking out for.