Research paper
Greer SM, Goldstein AN, Walker MP. The impact of sleep deprivation on food desire in the human brain. Nature Communications. 2013;4:2259. doi:10.1038/ncomms3259. PMID: 23922121. PMCID: PMC3763921.
Why we cite it
The fMRI study that revealed *why* sleep deprivation causes poor food choices — not through willpower failure but through a measurable neural "double hit." Published in *Nature Communications*, Greer, Goldstein, and Walker used functional brain imaging to show that sleep deprivation simultaneously impairs frontal cortex regions responsible for rational food evaluation (anterior cingulate, lateral orbital frontal, anterior insula — all significantly reduced) while amplifying amygdala reactivity to food desirability (significantly increased). The behavioral result: sleep-deprived participants desired ~600 additional calories, specifically from high-calorie foods. Critically, hunger levels didn't differ between conditions — participants weren't eating more because they were hungrier, but because their brain's evaluation system was compromised while its desire system was amplified. This completes the sleep–eating evidence triangle: csw06 (Nedeltcheva 2009) showed the behavioral outcome (more snacking), csh06 (Markwald 2013) showed the hormonal paradox (satiety signals overridden), and this paper shows the neural mechanism (impaired control + amplified desire).