Sleep

A stage of sleep – reflected in the size of our pupils – is important to committing recent memories to the brain, which could be manipulated to improve cognitive function and even identify issues with being able to recall newer experiences when awake.

A new study turned up a surprising effect of having caffeine with a sweetener. For some java drinkers, it could be a way to get more out of the beverage. For others, though, it might be best to skip the sugar, especially at night.

Declining brain function is a natural part of the aging process, but that doesn’t mean it can’t be delayed. A new study found that physical activity can boost brain function for up to 24 hours and, independent of exercise, so can a good night’s sleep.

In an analysis of the sleep habits of over 72,000 people, researchers identified a particular pattern that can dramatically spike the risk of major cardiovascular problems. The good news is that the pattern is relatively easy to avoid.

New York might be known as the city that never sleeps, but it turns out there's a lot less shuteye happening in smaller urban areas across the globe. And it's not because of nightlife, but artificial light emitted from buildings and infrastructure.

For the first time, there's scientific evidence that a smaller, lesser known component of cannabis – cannabinol – delivers better quality and longer sleep. It proved to be comparable to existing sleep aids, without the undesirable side effects.

Melatonin is already a popular supplement for those who struggle to get a solid night's sleep. But the dosage of the supplement and the best time to take it has remained largely a trial-and-error endeavor. A new study puts that uncertainty to bed.

As we're increasingly plugged-in to a 24/7 cycle of news, entertainment and social media, it is becoming harder to find time to switch off to practice self-care. This smart device, with the help of AI, aims to get any brain on the right track.

Using a weighted blanket overnight not only improves insomnia but mood as well, in addition to reducing the use of sleep medications, a review of existing studies has found. It’s an effective, non-drug way of improving sleep to ensure better overall health.

Toxic “forever chemicals” are a major environmental problem, and a growing body of research shows they’re also a major health problem. A new study has found people with higher levels of PFAS in their blood have poorer sleep.

A common childhood epilepsy drug has the potential to change the lives of millions of people who suffer from sleep apnea, as a clinical trial has delivered surprising results in reducing breathing interruptions and improving daytime alertness.

While being a night owl has a certain cachet, a new study shows that staying up into the wee hours can be downright dangerous. The late-night lifestyle was shown to dramatically raise diabetes risk and cause several other health-damaging effects.