Scientists have discovered five different types of sleep in humans, each with its own distinct brain activity pattern and impacts on health and behaviour, an advance that could lead to new depression ...

Growing evidence suggests that getting enough high-quality sleep may help protect against memory problems later in life, including Alzheimer’s disease and other forms of dementia. While no single ...

The American Medical Association reports that about 30 million people in the US live with sleep apnea, but only one-fifth of these cases are clinically diagnosed. That means that many people are ...