"Swimsuit season is shockingly near, tempting many of us to sample from the diverse buffet of contemporary diets that promise to melt away lingering belly fat. Countless diets make sweeping claims—from flushing away toxins to curbing appetite. But can dieting actually shrink the size of your stomach, making you want to eat less? And for that matter, does overeating stretch your stomach and encourage gluttony? These questions have divided scientists for decades, but recent research is beginning to bring new insights to the controversial subject.