Reproductive epidemiologist Shanna Swan returns to warn Joe Rogan that plastics and endocrine-disrupting chemicals are quietly tanking human fertility and health.

Shanna H. Swan — An environmental and reproductive epidemiologist known for research on declining sperm counts and the effects of phthalates and other endocrine-disrupting chemicals. She founded the Action Science Initiative and is behind the Netflix documentary 'Plastic Detox.'
Swan returns to JRE five years after her first appearance to discuss her documentary 'Plastic Detox,' which followed six infertile couples who reduced their exposure to plastics and plasticizers over three months. She explains the difference between microplastics, plastics, and plasticizers (phthalates, BPA, PFAS), and how these chemicals disrupt hormones in both men and women. The conversation ranges across contaminated coffee makers, nonstick cookware, treated clothing and uniforms, glyphosate in food, fluoride and chlorine in water, and fish from polluted lakes. Swan brings Rogan a urine-testing kit and a box of non-toxic kitchen swaps, and argues that regulation is failing so individuals must protect themselves. Both lament how little public attention the issue gets despite parallels to wildlife population declines.
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Shanna H. Swan / Louie (director, inferred)
“I hope your listeners will watch the plastic detox. It's a movie that a lot of people love and and found, you know, really moving. Um and you should watch it.” — guest 00:13:29Find it on Amazon
Shanna H. Swan / Louie (director, inferred)
“One of the beautiful things about Netflix is that so many people have Netflix... I really do hope you're going to go on a bunch of other podcasts” — host 01:39:45Find it on Amazon
Million Marker
“the company called Million Marker that you're going to send your pee to, um they have a education program. And that's a lot of what they do, the testing and the education.” — guest 00:11:25Find it on Amazon
Zip Top
“bags that are safe, oven, freezer, microwave. It's called Zip Top. Yeah, they're silicone... food grade silicone is free of thalates and bisphenol, so Okay. You can use that.” — guest 00:58:45Find it on Amazon
Wowe
“these bags are called Wawi, w o w e... It's another food storage, you know, choice option... it's um cloth. But clean cloth... Like for bread, it's really good.” — guest 01:12:46Find it on Amazon
Guy Sako (Defense Soap)
“it's an excellent product. It's called Defense Soap... a solution using healthy things like uh tea tree oil, eucalyptus in the soap that kills the bad bacteria but does nothing to the healthy flora” — host 00:54:03Find it on Amazon