People who stay up late get dementia?

The claim that staying up late leads to dementia is not entirely false, but it lacks supporting evidence.

Several studies have found a correlation between sleep deprivation and an increased risk of dementia, but it is unclear if the lack of sleep directly causes brain damage.

While sleep is essential for overall brain health, it's likely that several other factors, such as genetics, lifestyle, and overall health, play a more significant role in the development of dementia.