Hello everyone and welcome to talk nerdy. Today is Monday, September 22nd, 2025, and I'm the host of the show, Dr. Kara Santa Maria. And as always, before we dive

into this week's episode, I want to thank those of you who make Talk Nerdy possible.

Remember, the show is and will always be 100% free to download, and the way that we keep it going

is by relying on the support on a per episode basis from individuals just like you.

If you'd like to pledge your support, all you've got to do is visit patreon.com slash talk nerdy to

learn more.

This week's top patrons include Chuck Blev, David J.E. Smith, Daniel Lang, David Neva,

Joseph Lamore, Anu Bonavage, David Compton, Brian Holden,

Gabrielle F. Harmio, Ulrika Hagman, and Pasquale Jalati. Oh, no, we've got a new one there,

Joe Wilkinson. Oh, not new. Sorry, Joe. I just didn't see you in the drop down there.

And so many more. I always do the cut off after a certain tier. But goodness, I could keep going and just thank all of you from the

bottom of my heart. All right, let's get into this week's episode. So I had the opportunity

to chat once again. I actually had her on the show six years ago when her

first book came out and she is back, Dr. Sarah E. Hill, who is a researcher, a consultant,

a writer, a scientist, a science communicator, and a professor. She is, she actually runs a research

lab at TCU as an evolutionary psychologist where she focuses on health and relationships from an interdisciplinary perspective.

So everything from evolutionary biology, psycho-neuroimmunology, developmental endocrinology, and even social psychology.

And she has a new book out, and it's a

fascinating one. It's called the period brain, the new science of why we PMS and how to fix it.

So without any further ado, here she is Dr. Sarah E. Hill. Well, Sarah, thank you so much for joining me today.

Thank you so much for having me back. Of course. You know, it's funny. I was looking back on

the interwebs to see when exactly you were on the show last. It was the episode aired on October 14th, 2019. So when you were on

...