Going to bed before 9pm causes dementia?!

In a recent study, scientists found early sleeping had a 70% higher risk of developing dementia.

Sleep may impact both physical and mental health and has been linked to various health conditions such as heart disease, stroke, dementia, depression, and obesity.

https://share.newsbreak.com/244fatl0

Does that explain the behavior of the rabid SW trumpers disappearing early at night and hitting the hitting the sack?