The brain works all the time, even when a person sleeps. It helps us think, feel, and move. But like any busy system, it also creates waste. So how does the brain clean itself?
A new study gives a simple but exciting answer. The brain may have its own slow and steady cleaning system.
The brain’s drainage system
The body uses something called the lymphatic system to remove waste. This system works like a drainage network. It clears extra fluid and harmful substances.
For many years, scientists thought the brain stayed separate from this system. The brain is covered by protective layers called the meninges. These layers were believed to block any connection…