Welcome to Skeptical Sunday. I'm your host, Jordan Harbinger. Today I'm here with Skeptical

Sunday co-host writer and researcher Jessica Wynn. On the Jordan Harbinger show, we decode the

stories, secrets and skills of the world's most fascinating people and turn their wisdom into

practical advice that you can use to impact your own life and those around you. Our mission is to

help you become a better informed, more critical thinker.

During the week, we have long-form conversations with a variety of amazing folks,

from spies to CEOs, athletes, authors, thinkers, and performers.

On Sundays, though, it's skeptical Sunday where a rotating guest co-host and I

break down a topic you may have never thought about and debunk common misconceptions

about that topic. Topics such as why the Olympics are kind of a sham, circumcision, sovereign citizens,

diet supplements, the lottery, reiki healing, ear-candling, self-help cults, and more. And if you're

new to the show or you want to tell your friends about the show, I suggest our episode starter packs.

These are collections of our favorite episodes

on persuasion, negotiation, psychology, disinformation, cyber warfare, crime and cults, and more.

That'll help new listeners get a taste of everything we do here on the show. Just visit jordanharbinger.com

slash start or search for us in your Spotify app to get started. Today, fluoride, the lip-smacken curiosity in our water

supply. It's a fascinating mineral that's a hero for our teeth, but a puzzle for a lot of the

general public. We associate it with dental health, but in some mouths, the fluoride added to our

water leaves a bad taste. So what is fluoride? Why is it in our water? Will this lead to mind control via our

faucets? Researcher and writer Jessica Wynn joins me to wash away the confusion around fluoride.

Right. Hey, Jordan. Thanks for having me back on Skeptical Sunday. Yeah, welcome back. All right,

let's dive in. So first of all, what is fluoride exactly? I know I said it's a mineral,

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