sleep deprivation

04/01/2014 - 16:00

Approximately 50% of elderly humans experience sleep disorders, with consequences for quality of life and poor health. However, a new study on the fruit fly Drosophila melanogaster suggests that manipulation of the nutrient sensing insulin/IGF (IIS) and TOR (Target of Rapamycin) signalling networks eases age-related decline in sleep quality and duration. The study from researchers at the Max Planck Institute (MPI) for Biology of Ageing in Cologne is published on April 1st in the journal PLoS Biology.


08/06/2013 - 15:58

A sleepless night makes us more likely to reach for doughnuts or pizza than for whole grains and leafy green vegetables, suggests a new study from UC Berkeley that examines the brain regions that control food choices. The findings shed new light on the link between poor sleep and obesity.


03/08/2013 - 11:27

The biological term for that pay-the-piper behavior is “sleep homeostasis,” and now, thanks to a research team at the Perelman School of Medicine, University of Pennsylvania, one of the molecular players in this process has been identified – at least in nematode round worms.


10/24/2012 - 11:27

Evidence linking partial sleep deprivation to energy imbalance is relevant to weight gain prevention and weight loss promotion. A new study published today in the Journal of the Academy of Nutrition and Dietetics bases this finding on an extensive review of literature published over a fifteen-year period.

06/30/2012 - 06:57

Severe sleep loss jolts the immune system into action, reflecting the same type of immediate response shown during exposure to stress, a new study reports. Researchers in the Netherlands and United Kingdom compared the white blood cell counts of 15 healthy young men under normal and severely sleep-deprived conditions. The greatest changes were seen in the white blood cells known as granulocytes, which showed a loss of day-night rhythmicity, along with increased numbers, particularly at night.

03/30/2012 - 13:43

A single-center study found that percutaneous coronary intervention (PCI) procedures performed during the middle of the night do not adversely affect the safety and effectiveness of procedures performed the next day by the same operator. Findings now available in Catheterization and Cardiovascular Interventions, a journal published by Wiley-Blackwell on behalf of The Society for Cardiovascular Angiography and Interventions (SCAI), show late night work while on call does not worsen performance of the interventionist doing PCIs the next day.