Reduced sleep makes you overeat.....

This fits in with a lot of the studies I'd had before about the way in which lack of sleep can contribute to obesity....through messing up your brain and how it reacts to desires for  food.  Also it fits in with Stephan's work on food reward.

Sleep restriction leads to increased activation of brain regions sensitive to food stimuli.

RESULTS
Overall neuronal activity in response to food stimuli was greater after restricted sleep than after habitual sleep. In addition, a relative increase in brain activity in areas associated with reward, including the putamen, nucleus accumbens, thalamus, insula, and prefrontal cortex in response to food stimuli, was observed.
CONCLUSIONS:
The findings of this study link restricted sleep and susceptibility to food stimuli and are consistent with the notion that reduced sleep may lead to greater propensity to overeat.