Prospective cohort study shows shorter sleep duration worsens cognitive decline in Chinese adults, suggesting a need for targeted interventions.
Key Points
Shorter total sleep duration is linked to increased rates of cognitive decline trajectories.
Participants with shorter sleep durations had higher risks of rapid and slow cognitive decline, with relative risk ratios of 1.510 and 1.466, respectively.
Cognitive decline was assessed using a group-based trajectory model, indicating significant implications for older adults' health.
Despite the association, baseline depression symptoms did not mediate the relationship between sleep duration and cognitive decline.