The other day, I witnessed a diet-binge in action. My colleagues had decided to celebrate November's employee birthdays with a dozen pies, set out for the taking in our lunchroom. As I walked in, I saw a co-worker digging ferociously into one of four pie wedges, piled on her paper plate. Without looking up, mouth full of chocolate mousse, she announced that she had just finished her "diet" and could now eat "whatever and whenever (she) wanted."
I thought about all those pies of birthdays past, all the treats of holidays present and all the diets of New Year's future. These food schemes will be broken by February, lamented in March and resumed by spring - just after the parade of swimsuit advertisements.
Coincidentally, I stumbled across a recent study that explains the diet-binge cycle. It's about brain chemistry and stress -- not behavior and lack of willpower.
Pietro Cottone and colleagues at Scripps Research Institute recreated a diet-binge-diet cycle in rats. The researchers fed one group of rodents alternating cycles of regular chow (5 days) and sweetened, chocolaty chow (2 days). A second group of rats ate only regular-tasting food throughout the entire experiment.
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