Eating something sweet can produce a morphine-like, pain-blocking effect in animals, children and adults. A study at Memorial University of Newfoundland in Canada found that when women consumed a sweet treat before a test involving pressure pain, they experienced an increase in pain tolerance compared to those who ate something unpalatable or neutral. So, go ahead and suck on a piece of candy or a square of chocolate; it might just relieve your pain, as well as tickle your taste buds.