Our bodies are full of bacteria and other microbes, known collectively as the human microbiome. And while it may seem icky, most of those microbes aren't our enemies. In fact, we need them to stay healthy. Everyone develops their own unique mix of microbe species, starting with the ones they are exposed to during birth. Over time, those microbial communities can shift, for better or worse.

Originally released by Inside Science, 2019. Streaming video file encoded with permission for digital streaming by Infobase on March 25, 2019.

Antibiotics and Your Ever-Changing Gut (3:10); .