Research paper
Crispim CA, Zimberg IZ, dos Reis BG, Diniz RM, Tufik S, de Mello MT. Relationship between food intake and sleep pattern in healthy individuals. Journal of Clinical Sleep Medicine. 2011 Dec 15;7(6):659-64. doi:10.5664/jcsm.1476. PMID: 22171206; PMCID: PMC3227713.
Why we cite it
Cross-sectional study of 52 healthy volunteers (27 women, 25 men, ages 19-45) using polysomnography (PSG) and 3-day food diaries. Found that food intake near the sleeping period (dinner and late-night snack) was negatively associated with sleep quality variables. In women, nocturnal caloric intake correlated with increased sleep latency (r=0.67, p<0.001) and reduced sleep efficiency (r=-0.51, p=0.007). Fat intake was associated with longer REM latency and reduced REM sleep. Gender-specific correlations were observed. Relevant to companion 404 (the-sleep-eating-connection) as direct evidence that eating close to bedtime measurably impairs sleep quality, with specific sleep architecture effects documented by polysomnography.
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