During sleep, slow electrical waves push waste products from deep within the brain
There are about 170 billion cells in the brain, and as they go about their normal business, they produce a lot of waste. To stay healthy, the brain needs to flush out all that junk. But how exactly it does this has remained a mystery. Now, two teams of scientists have published three papers detailing the brain’s waste-disposal system. Their insights could help researchers better understand, treat, and perhaps prevent a wide range of brain disorders.