Brain immune cells appear to drive reversible sleep loss in mice with Alzheimer’s-like disease. A fire starts in one room, but instead of containing the danger, the sprinkler system floods the entire house. The response causes far more damage than the original threat. Something similar may happen in Alzheimer’s disease. Amyloid plaques, the sticky protein [...]

Even modest sleep loss may quietly lead to weight gain and raise the risk of chronic disease over time. People who reduced their nightly sleep by about 80 minutes for six weeks gained an average of one pound and spent more time being sedentary, according to researchers at Columbia University Vagelos College of Physicians and [...]