We may imagine it to be a relatively unchanging structure, but recent research has shown that the brain is in fact continuously changing its microstructure, and it does so by 'eating' itself. The processes of eating things outside the cell, including other cells, is called phagocytosis.

Does the brain start eat itself when you don't sleep?

Lack of sleep is more dangerous than you've ever thought: According to a new research, the brain starts eating its own connections, worn-out cells and debris when it doesn't get enough sleep. This is as scary as it can get: If you don't sleep enough, you are exposing yourself to unthinkable consequences.

What happens to brain if you don't sleep?

Sleep deprivation leaves your brain exhausted, so it can't perform its duties as well. You may also find it more difficult to concentrate or learn new things. The signals your body sends may also be delayed, decreasing your coordination and increasing your risk for accidents.