By Martha A. Lavallie
Dr. Andrew Huberman attended a popular science talk in Copenhagen’s concert hall, with a gripped audience listened intently to Dr. Shanna Swan discuss a startling decline in testosterone levels and sperm counts.
Her message: We should be very worried.
Two Decades of Research Confirm the Decline
Swan has studied falling sperm counts for over 20 years. In the 1990s, she initially doubted claims of a major decline. But upon closely analyzing 61 studies, she found sperm counts had plunged 50-60% between 1973 and 2011 ¹.
It was a shockingly “stable result” that didn’t budge “to the first decimal place” after accounting for potential errors.
Since then, Swan’s research has only strengthened the sperm decline finding. In 2017, she published a seminal study with colleagues showing total sperm count has dropped 59% in just 39 years ².
Swan calls this the “1% effect” – a steady yearly decline of 1% in sperm and testosterone over generations. Miscarriages and fertility problems in women are rising at the same rate ³.
Dire Consequences for Fertility & Society
The implications are dire. By 2050, this may mean most men may be infertile.
Developed countries face inverted population pyramids, with swelling elderly populations supported by shrinking young workforces. The world fertility rate has halved from 5 children per couple in 1960 to 2.3 today.
Genetics don’t explain the plunge. The finger points to “hormone hacking” chemicals called endocrine disruptors.
These hijack the body’s hormone system, interfering with testosterone and fertility.
Phthalates In Plastics are a Key Culprit
Phthalates ⁴, which soften plastics, are a leading culprit. Rodent studies show phthalate exposure in utero shrinks male genitalia and reduces testosterone. Swan’s research found the same “phthalate syndrome” in baby boys whose mothers had high phthalate levels during pregnancy.
They had shorter anogenital distances, signaling lower testosterone exposure in the womb.
Animal studies reveal this spells trouble later in life. Male rats exposed to phthalates prenatally grow into subfertile adults even if their environment is cleaned up ⁵.
Similarly, men with shorter anogenital distances often have genital birth defects, testicular cancer and low sperm counts.
The verdict is in: phthalate exposure in the womb damages male reproductive health for decades after.
Phthalates Are Ubiquitous, But Avoidable
Phthalates lurk everywhere – plastics, vinyl products, tubing, personal care products, pesticides. BPA, another hormonal chemical, lines tin cans and plastic bottles.
Hundreds of stealthy hormone hackers swarm our bodies.
Reason for Hope
The good news is phthalates quickly exit the body once exposure stops. And rodent studies show reproductive function can be restored in three generations after environmental cleanup.
So while the clock is ticking on male fertility, small steps to minimize hormone hackers now offer hope of reversing this crisis for our sons and grandsons.
Sources
This article was originally published on, and syndicated by Viral Chatter.
- ncbi.nlm.nih.gov/pmc/articles/PMC6455044/
- academic.oup.com/humupd/article/23/6/646/4035689
- /pubmed.ncbi.nlm.nih.gov/29053188/
- cdc.gov/biomonitoring/Phthalates_FactSheet.html
- pubmed.ncbi.nlm.nih.gov/16102138/
Here are a couple of videos of Dr. Andrew Huberman and Dr. Shanna Swan discussing this:
—
This post was previously published on Viral Chatter.
***
You Might Also Like These From The Good Men Project
 Compliments Men Want to Hear More Often |
 Relationships Aren’t Easy, But They’re Worth It |
 The One Thing Men Want More Than Sex |
 ..A Man’s Kiss Tells You Everything |
Join The Good Men Project as a Premium Member today.
All Premium Members get to view The Good Men Project with NO ADS.
A $50 annual membership gives you an all access pass. You can be a part of every call, group, class and community.
A $25 annual membership gives you access to one class, one Social Interest group and our online communities.
A $12 annual membership gives you access to our Friday calls with the publisher, our online community.
Register New Account
Log in if you wish to renew an existing subscription.
Username
First Name
Last Name
Password
Password Again
Choose your subscription level
- Yearly – $50.00 – 1 Year
- Monthly – $6.99 – 1 Month
Credit / Debit Card PayPal Choose Your Payment Method
Auto Renew
Subscribe to The Good Men Project Daily Newsletter By completing this registration form, you are also agreeing to our Terms of Service which can be found here.
Need more info? A complete list of benefits is here.
—
Photo credit: iStock
The post Testosterone & Sperm Counts in Freefall: Dr. Thinks Key Culprit Is Phthalates appeared first on The Good Men Project.
