Diet Soda Drinkers Gain Weight

Overweight Risk Soars 41 Percent With Each Daily Can Of Diet Soda

(WebMD)  She remembers being struck by the scene in Alice's Adventures in Wonderland in which Alice is offended because she is offered tea but is given none — even though she hadn't asked for tea in the first place. So she helps herself to tea and bread and butter.

That may be just what happens when we offer our bodies the sweet taste of diet drinks, but give them no calories. Fowler points to a recent study in which feeding artificial sweeteners to rat pups made them crave more calories than animals fed real sugar.

"If you offer your body something that tastes like a lot of calories, but it isn't there, your body is alerted to the possibility that there is something there and it will search for the calories promised but not delivered," Fowler says.

Perhaps, Bonci says, our bodies are smarter than we think.

"People think they can just fool the body. But maybe the body isn't fooled," she says. "If you are not giving your body those calories you promised it, maybe your body will retaliate by wanting more calories. Some soft drink studies do suggest that diet drinks stimulate appetite."

Sources: Fowler, S.P. 65th Annual Scientific Sessions, American Diabetes Association, San Diego, June 10-14, 2005; Abstract 1058-P. Sharon P. Fowler, MPH, University of Texas Health Science Center School of Medicine, San Antonio. Leslie Bonci, MPH, RD, director, sports nutrition, University of Pittsburgh Medical Center. WebMD News: "Artificial Sweeteners May Damage Diet Efforts." Davidson, T.L. International Journal of Obesity, July 2004; vol 28: pp 933-955.