When you have narcolepsy, you may also have other medical conditions that can affect how tired you feel, how well you sleep, and other things. These conditions can make it harder for your doctor to ...

Get inspired by a weekly roundup on living well, made simple. Sign up for CNN’s Life, But Better newsletter for information and tools designed to improve your well-being. Matthew Horsnell began ...

A hormone produced by the brain, orexin, may play a central role in the functioning of the brain's glymphatic system, which clears waste, according to a new study from the University of Oulu.