Shanna H. Swan

Date: 2026-03-31 | Duration: 1h 50m

Episode Overview

Dr. Shanna H. Swan returns to The Joe Rogan Experience to discuss her new Netflix documentary "Plastic Detox" and the alarming ongoing decline in human reproductive health caused by endocrine-disrupting chemicals and microplastics. Swan opens by crediting her previous appearance on JRE as the catalyst that pushed her to launch the Action Science Initiative — a program to make her research accessible to the general public rather than only academic audiences. The conversation covers the dramatic decline in sperm counts and testosterone levels over recent decades, documenting a groundbreaking intervention study with the sperm-testing company Fellow showing that simple, targeted lifestyle changes can reverse damage within weeks. They discuss how glyphosate (Roundup), phthalates, BPA, and PFAS forever chemicals infiltrate everyday products — food packaging, personal care products, tap water, and freshwater fish — and why regulatory agencies have been slow to act. Swan gives practical guidance on reducing exposure: switching to glass and stainless steel containers, using clean soaps that preserve the microbiome, filtering water, and avoiding plastic-heavy processed foods. She and Joe discuss the politics of DOGE cuts to environmental research, RFK Jr.'s efforts on glyphosate, and the broader challenge of communicating scientific risk to a skeptical public. The episode closes with Swan promoting the Plastic Detox documentary and an at-home test kit for measuring chemical exposure.

About Shanna H. Swan

Dr. Shanna H. Swan is a renowned environmental epidemiologist and the influential author of "Count Down," a compelling exploration of the alarming decline in male reproductive health linked to environmental factors. As the director of The Action Science, she leads groundbreaking research that unravels the complex interplay between chemicals and fertility, garnering attention from both the scientific community and the public. With her extensive credentials, including numerous peer-reviewed publications, Dr. Swan is a pivotal voice advocating for awareness and action against environmental threats to reproductive health, making her a captivating guest on the Joe Rogan Experience. Her insights challenge listeners to rethink the impact of modern living on future generations.

Key Moments

– Endocrine Disruptors and Microplastics
– Sperm Count and Testosterone Decline
– Action Science Initiative
– Glyphosate and Industrial Agriculture
– PFAS Forever Chemicals in Food and Water
– Plastic Detox Netflix Documentary
– Practical Detox Strategies
– Microbiome and Skin Flora Protection
– RFK Jr. and Environmental Policy
0:00:01 – Swan Thanks Joe: Previous JRE Appearance Changed Her Life
0:01:20 – Launching Action Science Initiative to Reach the Public
0:09:39 – Fellow Sperm-Testing Study: 200,000 Men, Measurable Improvement in Weeks
0:24:43 – Fertility in the Toilet: Why Sperm Count Decline Is Being Ignored
0:40:00 – Glyphosate Is Toxic: RFK Jr.'s Crusade and Government Pushback
0:54:52 – Protecting the Microbiome: Soaps, Pool Water, and Skin Flora
1:09:16 – Mercury and PFAS in Freshwater Fish: Danger for Pregnant Women and Children
1:24:48 – Joe's Steel French Press Routine: Eliminating Plastic From Coffee
1:50:21 – Plastic Detox Documentary Now on Netflix — How to Reduce Exposure
1:51:08 – At-Home Chemical Exposure Test Kits Available for $100

Transcript Excerpt

Starting point is 00:00:01 Joe Rogan podcast, checking out. The Joe Rogan Experience. Train by day, Joe Rogan podcast by night, all day. Great to see you again. Great to see you, Joe. Happy to be here. Happy to have you here. So you've got a documentary about the, essentially about the same subject that you talked about the last time you're here, the impact of microplastics and all these various endocrine disrupting chemicals that we're dealing with. Starting point is 00:00:31 Right. Right? Right. Tell me about it. Well, it started as a movie on plastic. And when I met Louis and he filmed me in New York about five years ago also, it wasn't the small study that we have today. But let me backtrack because I want to tell you something that I never told you, Starting point is 00:01:02 but so important to me. So you remember when I was here, you said, are you saying the toxins in the environment are threatening the survival of the human race? Right. And I said, that's my story, and I'm sticking to it. Yes. Yes? Starting point is 00:01:20 And then you said something which changed my life. You said, why don't people know about this? Remember that? Yes. I went home and I thought a lot about that question. And that was what led me to create the program that I have now, Action Science Initiative, which is doing short, impactful, relatively cheap interventions to alert people to the problem and communicating this in a way that I'm hoping will reach more people. Starting point is 00:02:02 than academia where I was speaking before. Because before I talked to you, I talked to my peers in, you know, academia and the ivory tower, you know, at the meetings where they all went. They read the papers that we all read. But the general public didn't get this. So you really were, I have to tell you thank you. And you were actually very influential in my life. Well, I'm very happy to help. When I first heard about your book and I started going over the details of it and the subject matter...

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What topics were discussed on JRE #2476?

On Joe Rogan Experience #2476 with Shanna H. Swan, topics include Endocrine Disruptors and Microplastics, Sperm Count and Testosterone Decline, Action Science Initiative, and Glyphosate and Industrial Agriculture.

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