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Sleeping less than six hours was associated with higher risk of death in people with metabolic syndrome, a cluster of several heart disease and diabetes risk factors. This effect was particularly strong in those with elevated blood pressure or poor glucose metabolism.

Sleep loss in mice sends the brain’s immune cells into overdrive. This might be helpful in the short term, but could increase the risk of dementia in the long run

Your biological clock is probably the most reliable machinery in your body: it runs 24-7 to regulate vital functions from sleep to metabolism and remains stubbornly steadfast when you fly across time zones. Scientists still don’t know exactly how this this internal clock works. But now researchers have identified a missing gear that could offer a cure for jet lag.

Sleeping for a third of a day has to have a purpose, if not, its not particularly advantageous to human evolution. Scientists have been studying sleep for decades and have come up with some answers. Here are 5 functions your brain carries out during sleep.

Being able to sleep well in old age can cut the risk of developing a wide range of mental and physical disorders such as Alzheimer’s disease, say scientists.

In news that will come as no surprise to anyone over the age of 30, new research has found it gets harder to sleep as we get older.

As we age, some systems in the body don’t work as well. Eyesight weakens, there can be some minor age related memory loss and many people move a little slower and don’t stay as active. Sleep disturbances are common as well, but recent research shows that sleeping patterns could be an indicator of another problem seen in the elderly: dementia. Currently estimates put the number of people dealing with some form of dementia at about 46 million globally. In the United States, there are approxima...