Hunger_Pain

Hunger Pain Over the years, scientists have proposed many hunger signals. Some researchers argued that the contracting stomach provides the trigger. One investigator went so far as to swallow a balloon and inflate it. This dulled his appetite all right, but other researchers countered that people who had had their stomachs surgically removed still became hungry. Biologists have also debated whether a dip in the blood's sugar concentration initiates desire for a meal. Two years ago, scientists found that when they gave a hormone called ghrelin to rodents, it stimulated feeding. Last year, Cummings' team showed that the concentration of ghrelin in a person's blood rises significantly before meals and plummets afterwards. And in one of the latest studies, investigators observed that people receiving premeal infusions of the hormone increased their food intake by an average of 30 percent. Although scientists only identified ghrelin in 1999, ghrelin, hormone, people, leptin, appetite, weight, treatments, scientists, researchers, loss, interest, concentration, become, years, year, whether, way, wasting, variety, turned, trick, thinking, team, syndromes, swallow, surgically, suppress, sugar, substance, studies, stomachs, stimulated, stimulant, stemming, speculated, significantly