# Jaap de Roode: How butterflies self-medicate

Just like us, the monarch butterfly sometimes gets sick thanks to a nasty parasite. But biologist Jaap de Roode noticed something interesting about the butterflies he was studying — infected female butterflies would choose to lay their eggs on a specific kind of plant that helped their offspring avoid getting sick. How do they know to choose this plant? Think of it as “the other butterfly effect” — which could teach us to find new medicines for the treatment of human disease.

- Kind: Talk
- Year: 2015
- Runtime: 6 min
- By: TED.com
- Genres: Education, Science, Nature
- Archive: [Internet Archive](https://archive.org/details/JaapDeRoode_2014Y)
- Licence or status: [CC BY-NC-ND 3.0](http://creativecommons.org/licenses/by-nc-nd/3.0/) (as the archive states it)
- Who can watch: Tweens profiles and older (the archive gives no rating; placed by Invisible Network from its collection and subjects)

[Watch now](https://invisiblenetwork.ai/watch/archive/ia/JaapDeRoode_2014Y?play=1)