Gut Instinct
For every cell in your brain, bones, organs and blood, there are 10 bacteria. They’re not going anywhere, so you might as well get used to them.
Bacteria can be helpful: Some live in the intestines and aid with digestion. They can also be harmful: Some bacteria cause serious disease. And some bacteria can be both helpful and harmful.
Read more about gut bacteria – and how they affect decision-making in mice – in this snapshot from Science News for Kids. It was adapted from an article by Tina Hesman Saey.