How Did Vikings' Gut Worms Create Today's Lung Disease?

Intestinal parasites that plagued our ancestors seem to have led to a genetic adaptation that's causing emphysema and COPD today. Learn more in this episode of BrainStuff, based on this article: https://health.howstuffworks.com/diseases-conditions/respiratory/viking-toilet-investigation-emphysema.htmSee omnystudio.com/listener for privacy information.