We all assume medicine works. You take the pill, you get better. But for a huge number of people, it doesn't — and it's not because the medicine is bad.

The answer is living inside you right now.

Jenny Yang, PhD scientist and co-founder of Outpost Bio, is decoding the relationship between your gut microbiome and the compounds that enter your body. In this conversation, she breaks down why two people with the same disease, taking the same pill, can have completely opposite reactions — and why medicine has been missing this piece of the puzzle for decades.

Stay curious. Question everything. And maybe start treating your gut like the sophisticated ecosystem it is.