Total dairy consumption is associated with healthy sleep patterns in U.S. adults

Dairy consumption is associated with improved odds of adequate sleep, no trouble sleeping, and less variable sleep in U.S. adults. However, additional studies are warranted to assess causality. Current Knowledge/Study Rationale: Emerging research suggests that diet influences sleep health; however, evidence on the specific role of dairy products remains limited. We examined the association between dairy product consumption (total and subtypes) and both self-reported and objective sleep metrics in a nationally representative sample of U.S. adults. Study Impact: Dairy intake, especially of fermented dairy products, is associated with better sleep patterns, via improved odds of having adequate sleep, no trouble sleeping, and less sleep variability. Longitudinal studies and clinical interventions are needed to investigate causal associations and to clarify underlying mechanisms.