Endocrine Disruptors - Common Chemicals That Severely Alter Your Hormones - Dr. Shanna Swan | After Skool
Sep 15, 2026 · 49m
Summary
Reproductive epidemiologist Shauna Swan discusses the alarming global decline in sperm counts, which has accelerated to 2.64% annually since 2000. She attributes this trend to environmental endocrine disruptors, such as phthalates and bisphenols found in plastics and pesticides, which interfere with natural hormone production. Swan explains how prenatal exposure to these chemicals affects fetal development and long-term fertility, while also addressing the societal and economic consequences of falling birth rates. The episode concludes with practical advice for individuals to reduce chemica…
Topics discussed
Introduction and the 2017 sperm count study
New findings: global decline and accelerated rate
Ruling out genetic causes for rapid decline
Lifestyle factors affecting fertility
Involuntary environmental exposures and chemicals
Hormonal regulation and endocrine disruption
Phthalates, BPA, and plastic water bottles
Pesticides and the difference in recovery
Prenatal exposure and the 'black box' of the womb
Anogenital distance as a marker of testosterone
Mechanism of phthalate impact on fetal development
Consequences: infertility and assisted reproduction
Health impacts: longevity and global fertility rates
Demographic shifts and the inverted population pyramid
Is population decline a good thing? Rights and animals
Economic burdens and South Korea's fertility crisis
Mint Mobile advertisement
Social phenomena: rent-a-family and libido decline
Deliberate intent vs. economic drivers of chemical use
The need for regulation and safer alternatives
Endocrine disruption and the LGBTQ+ spectrum
Sensitivity in discussing gender dysphoria and chemicals
Advice for young adults: awareness and banking sperm
Reproduction as a neglected field of study
Conclusion and book recommendation
USAA advertisement
Listen ad-free on Castria