If you’re worried your high-speed, high-stress, fast food lifestyle may be giving you an ulcer, how can you know for sure? Ulcers affect the inside lining of our digestive tracts, causing persistent, burning and downright distressing pain.

You know that uncomfortable feeling you get when you hear sharp fingernails scrape down a blackboard? How about when you’re stuck on a 12-hour flight seated right next to a baby that’s been wailing for hours on end?