When’s the last time you saw a get-well card for psoriasis or eczema? Skin’s our biggest organ — and does lots of hard work keeping us healthy — but still, it doesn’t get much respect. Skin regulates our temperature, protects us from germs, and generally serves as the final barrier between our bodies and the world. On this episode, we look at what our skin does for us — and what happens when it breaks down.

Also heard on this week’s episode: