While much is known about the negative health implications of insufficient sleep, relatively
little is known about risks associated with excessive sleep. However, epidemiological …

Although the function of sleep remains a biological enigma, there is an accumulating mass
of empirical evidence demonstrating that habitually short sleep duration can have adverse …

This review of the scientific literature examines the widely observed relationship between
sleep duration and mortality. As early as 1964, data have shown that 7-h sleepers …

Background: Increasing evidence suggests an association between both short and long
duration of habitual sleep with adverse health outcomes. Objectives: To assess whether the …

Epidemiologic studies have shown that sleep duration is associated with overall mortality.
We conducted a systematic review of the associations between sleep duration and all …

Summary Approximately 27–37% of the general population experience prolonged sleep
duration and 12–16% report shortened sleep duration. However, prolonged or shortened …

Abstract Study Objective: Sleeping more than 7 to 8 hours per day has been consistently
associated with increased mortality. Whether this association is causal and what pathways …

PURPOSE: Variation in sleep duration has been linked with mortality risk. The purpose of
this review is to provide an updated evaluation of the literature on sleep duration and …

Objective The dose–response of short sleep duration in mortality has been studied, in
addition to the incidences of notable health complications and diseases such as diabetes …

Epidemiologic studies have consistently shown that sleeping> 8 h per night is associated
with increased mortality. Indeed, the most recent American Cancer Society data of 1.1 …