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 ...

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 ...

On the flip side, sleep also may be used to supercharge your memories and improve your recall. “In part, while we are ...

What is core sleep is on your Apple Watch, and does it even matter? We look at which sleep stages matter most for quality ...

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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 ...