If you often suffer a reaction soon after eating burgers or hummus, it might be time to get checked out for one of the fastest-growing allergies in the US: sesame seeds. Experts link the spike in allergies to the increasing popularity of sesame-rich foods like falafel and tahini—but the Food and Drug Administration isn’t especially concerned, reports WebMD.
But don’t panic yet: In one study, all but one of the sufferers had a strong family predisposition to allergies. And while kids with allergies to tree nuts have three times the risk of bad reactions to sesame, there’s no simple blood or skin test: The best way to diagnose the allergy is to eat the seeds, and wait. (Read more food allergies stories.)