Epidemiologic Study of Sleep Disturbances and Psychiatric Disorders

An Opportunity for Prevention? As part of the National Institute of Mental Health Epidemiologic Catchment Area study, 7954 respondents were questioned at baseline and 1 year later about sleep complaints and psychiatric symptoms using the Diagnostic Interview Schedule. Of this community sample, 10.2% and 3.2% noted insomnia and hypersomnia, respectively, at the first interview. Forty […]

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Impact of Sleep on Appetite Regulation

Sleep duration seems to play an important role in the regulation of human leptin and ghrelin levels, hunger and appetite. Differences in energy balance between sleep restriction and sleep extension do not entirely explain the differences in appetite regulation since the laboratory studies kept energy intake and activity levels constant for both bedtime conditions.Sleep loss […]

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Shorter Sleep Duration and Poorer Sleep Quality Linked to Alzheimer’s Disease

Poor sleep quality may impact Alzheimer’s disease onset and progression. This is according to a new study led by researchers at the Johns Hopkins Bloomberg School of Public Health who examined the association between sleep variables and a biomarker for Alzheimer’s disease in older adults. The researchers found that reports of shorter sleep duration and […]

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Emerging Cancer Trends among Young Adults in the USA

Cancer trends in young adults, often under 50 years, reflect recent changes in carcinogenic exposures, which could foreshadow the future overall disease burden. Previous studies reported an increase in early onset colorectal cancer, which could partly reflect the obesity epidemic. We examined age-specific contemporary incidence trends in the USA for 30 common cancers, including 12 […]

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Circadian Hormonal Inputs to Regulate Fat Cell Differentiation

Circadian adipogenic stimuli are rejected by the adipocyte differentiation system This circadian filtering requires fast and slow positive feedback to PPARG Loss of circadian glucocorticoid oscillations in mice increases fat mass Glucocorticoid and other adipogenic hormones are secreted in mammals in circadian oscillations. Loss of this circadian oscillation pattern correlates with obesity in humans, raising […]

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Exercising to Relax

How does exercise reduce stress, and can exercise really be relaxing? Rest and relaxation. It’s such a common expression that it has become a cliche. And although rest really can be relaxing, the pat phrase causes many men to overlook the fact that exercise can also be relaxing. It’s true for most forms of physical […]

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Timing of food intake is more potent than habitual voluntary exercise to prevent diet-induced obesity in mice

Inappropriate eating habits such as eating late at night are associated with risk for abnormal weight-gain and adiposity. We previously reported that time-imposed feeding during the daytime (inactive phase) induces obesity and metabolic disorders accompanied by physical inactivity in mice. The present study compares metabolic changes induced in mice by time-imposed feeding under voluntary wheel-running […]

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Sleep deprivation: Impact on cognitive performance

Today, prolonged wakefulness is a widespread phenomenon. Nevertheless, in the field of sleep and wakefulness, several unanswered questions remain. Prolonged wakefulness can be due to acute total sleep deprivation (SD) or to chronic partial sleep restriction. Although the latter is more common in everyday life, the effects of total SD have been examined more thoroughly. […]

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