Loss of slow-wave sleep as you age may increase your risk of developing dementia, according to a new study. “We found that aging was associated with a decline in the amount of the deepest stages of ...

You’ve heard of REM sleep but what about deep sleep? Experts share why it’s important and how to make sure you’re getting enough of it.

The key to keeping your wits about you as you age may lie in shut-eye during midlife. A study found that people over 60 who didn’t get enough slow-wave sleep — the third stage in the human sleep cycle ...

If you've been looking for a sign to work on your sleep hygiene, this is it. A new study suggests that a particular wave of sleep, called slow-wave sleep, plays an integral role in staving off ...

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Sign up for CNN’s Sleep, But Better newsletter series. Our seven-part guide has helpful hints to achieve better sleep. Loss of slow-wave sleep as you age may ...