Fertility on the Joe Rogan Experience
3 fact-checked claims across 2 episodes · Jan 2018 to Apr 2021 · updated Jul 20, 2026
Each is a receipt: the exact quote, its timestamp, what published evidence says, and who benefits.
Most claims
- Dr. Shanna Swan (2)
- Dr. Neil Riordan (1)
Related topics
Logged claims
“And at that point, the median, that's the middle of the distribution, was 99 million sperm per milliliter.”
Swan states her 2017 meta-analysis found median sperm concentration in Western countries fell from 99 million/mL in 1973 to 47 million/mL in 2011.
“our sperm count, our miscarriage rates, our fertility rates, our testosterone levels, they're all going south, if you will, at the rate of about 1% per year”
Swan claims sperm count, miscarriage rates, fertility rates, and testosterone levels are all declining at roughly 1% per year due to endocrine-disrupting chemicals.
“Yeah, there's some really good animal data showing that you can inject these cells and you can take ovarian failure and reverse it. And in her case, she had an…”
Riordan claims stem cell treatment reversed ovarian failure and enabled a previously infertile patient to conceive, citing animal data as support for a human anecdote.