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Last week we brought you the history of how retinoids became so ubiquitous on our bathroom counters. But this week we answer the question - how do they even work? More importantly, do they? Tune in for part 2 of retinoids today!

It's all over your TikTok, your Instagram, your dermatologist office, it seems inescapable: tretinoin. But, what actually is it, and why did we decide to start slathering it on our faces? Tune in this week for part 1 of a series all about Retinoids!

Just in time for your holiday shopping... new merch! Shoutout to Charlotte Croy Hudson for the design, we are OBSESSED with it! Get your hands on it before it's gone! buff.ly/47fS4Ro

This week’s #bookclub episode features The Exceptions by Kate Zernike @kzernike. If you’ve ever wondered if the sexism in academia is “just in your head” this is the episode for you. Fair warning: you’re going to get mad. It’s going to be great.

11 years of friendship, 7 years of the pod, and 5 years since our last Ask The Erins episode, it’s time for an update! Today we answer YOUR questions, & we had so much fun doing it! Thanks to everyone who wrote in with a question, and thanks to all of you for listening! ❤️

Hi hello we are nominated for a Signal award and sure are excited about it and would just so love it if you voted for us!! Voting is open until October 17th THANKYOUSOMUCH! buff.ly/3BB1U5z

If you’ve ever wondered why you can’t remember where you put your sunglasses, but you can’t forget the smell of sawdust and vomit from your first grade classroom, then this ep is for you! We chat with @charanranganath about his book Why We Remember for an ep you won’t forget!

What does it mean to be allergic to red meat, and how on earth could a tick cause such a thing? Tune in this week to find out as we tell the story of alpha-gal syndrome, a surprising and strange disorder on the rise across the globe.

Iron is an essential element for all life on the planet. But what happens if we end up with too much of a good thing? Find out on today’s episode on hemochromatosis, a hereditary condition that results in iron overload. Available now wherever you like to listen! Pic: wikicommons

How often do you think about phosphorus? After this episode, you won’t be able to stop. Author Dan Egan talks with Erin Welsh about his book, The Devil’s Element: Phosphorus and a world out of balance. From pollution to explosives to existential threats, this episode has it all!

We got to sit down with @LeeMordechai and @MerleEisenberg of the awesome podcast Infectious Historians! Check it out now (and get pumped for a future #bookclub episode featuring their book, Diseased Cinema!)

The stethoscope: today, it’s a tool essentially synonymous with Doctor. But there was a time not all that long ago when it didn’t exist… and might there be a time in the future when they’re made obsolete by new technology? Tune in this week to find out!

This week’s episode features the One and Only… Vomiting Larry! We get into all things Norovirus and talk a whole lot about, well, vomit. Tune in now wherever you like to listen!

This week's book club episode features The Black Angels, by award-winning author @mariasmilios. Smilios tells the stories of the courageous nurses who worked at Sea View Hospital, facing the constant threat of disease and perpetual racism, who helped bring about a cure for TB.

We're back with a second episode about America's Poison Centers! We are thrilled to be joined by Dr. Doyon, who provided the firsthand account in last week's episode to ask her so many questions about what actually happens and who you're talking to when you call a @PoisonCenters

Today's episode is all about poison control! We loved this topic so much we ended up splitting it into two! This week we get into how poison control centers came to be, from one pharmacist taking personal phone calls, to a national system and a universal phone number. Listen now!