It can vary depending on your sleeping pattern and schedule, but generally, the worst time to nap is during the late ...

None of them had mild cognitive impairment or dementia at the start of the study. Over the course of the study period, 22% of ...

"Sleep is essential for cognitive health, as it allows the brain to rest and rejuvenate," said neurologist Yue Leng.

Dementia is a syndrome linked to the ongoing decline of the brain - and there are a number of warning signs that can appear ...