Topic

Microplastics

Microplastics in the body and the environment, why they matter for men, and the practical ways to lower your exposure.

The Real Reason Sperm Counts Are Falling (It's Not Just Heat)
Sperm HealthMicroplastics
Sperm counts have fallen sharply over the last few decades, and the biggest drivers look environmental, not the occasional sauna. Sauna-level heat does lower sperm production for a while, but the effect reverses once the heat stops. Read more...
What I Learned Watching Men Turn Infertility Support Groups Into Research Teams
Male FertilityMicroplastics
I spent the last few months digging into infertility support groups for men. Not because I was looking for a story about men learning to open up and talk about their feelings. I went in expecting something closer to that. What I found was something else entirely.There were guys sharing full PDFs of studies from journals like Human Reproduction Update. Someone had built a spreadsheet tracking phthalate levels in different protein powders. Another guy spent his Saturday cross-referencing his city's water quality reports against sperm motility data from a paper... Read more...
The Fertility Myths Men Keep Falling For—And What the Science Actually Says
Male FertilityMicroplastics
Most of the fertility warnings men repeat, from avoiding saunas to ditching briefs, are overblown or built on shaky research. The real threats are environmental, particularly microplastics and endocrine-disrupting chemicals, while factors like age and chronic stress get far less attention than they deserve.You’ve heard the warnings your whole adult life. Don’t sit with your laptop on your lap. Throw away your tight boxer briefs. Never step foot in a sauna if you ever want kids. Every guy over thirty has absorbed at least a few of these rules, and... Read more...
The Fertility Meal Plan That Actually Accounts for the World We Live In
Male FertilityMicroplastics
A fertility meal plan that accounts for today's world has to do two things at once: supply the raw materials your body needs to build healthy sperm, and actively support your liver, kidneys, and gut as they process the chemical load coming from food, water, and air.Search for "male fertility diet" and you'll get the same recycled advice everywhere: eat walnuts, cut back on beer, maybe take a multivitamin. That advice isn't wrong. But it assumes the biggest threat to your sperm is a nutrient deficiency. That might have been... Read more...
I Froze My Sperm at 32. Here’s What I Learned About the Cost, the Process, and Why the Microplastics Research Made Me Do It.
Sperm HealthMicroplastics
Freezing sperm at 32 costs around $1,550 in the first year and roughly $400 annually after that, and the author did it after a 2024 University of New Mexico study found microplastics in every human testicular sample examined, raising questions about what long-term environmental exposure could do to future sperm quality.I remember the exact moment I stopped ignoring the research. I was sitting in my kitchen, scrolling through a study from the University of New Mexico. They had found microplastics in every single human testicle they examined. Every one. Twenty-three... Read more...
Your Grandfather's Sperm Count Was Higher – Here's What Changed
Sperm HealthMicroplastics
Global sperm counts dropped 51.6% between 1973 and 2018, according to a meta-analysis in Human Reproduction Update, and the rate is accelerating. The leading explanation is that modern life surrounds men with endocrine-disrupting chemicals their biology never evolved to handle.Most men don't think about their sperm until they're trying to use it. By then, the damage is often already done.Here's the number that should bother you: global sperm counts dropped 51.6% between 1973 and 2018, according to a meta-analysis in Human Reproduction Update (Levine et al., 2022). That's not a... Read more...
The Silent Sauna Saboteur: Why Clean Air Is Non-Negotiable
MicroplasticsAir Quality
Clean air in the sauna matters because heat dramatically accelerates off-gassing from synthetic materials and adhesives, and your breathing rate rises to the point where your lungs pull VOCs, microplastics, and other airborne compounds straight into your bloodstream, turning a recovery session into an unintended chemical exposure.You've got your sauna routine down pat. Twenty minutes at 185 degrees, a few rounds of löyly, and you step out feeling like a new man. But after spending too much time reading studies and old Finnish texts, I hit on a question that... Read more...
Male Fertility in the Age of Plastics: What Environmental Chemicals Mean for Sperm Health
Male FertilitySperm Health
Environmental chemicals like phthalates, bisphenols, PFAS, and certain pesticides can interfere with hormone signaling and raise oxidative stress in ways that may affect sperm count, motility, morphology, and DNA integrity, but sperm production runs on a rolling cycle of roughly 70 to 90 days, so reducing common exposures can genuinely move the needle over time.Most guys think sperm health is fixed. You either “have good swimmers” or you don’t. The reality is more annoying and more hopeful than that. Sperm are built on a rolling schedule, and what you’re exposed... Read more...
Processed Foods, Pesticides, and Plastics: The Trio Threatening Male Fertility
Male FertilityMicroplastics
Processed foods, pesticides, and plastics threaten male fertility by fueling inflammation, mimicking or blocking hormones, and introducing endocrine-disrupting chemicals into the body, all of which interfere with sperm count, shape, and motility.Let's cut through the noise. When it comes to sperm health, the standard advice is all about what to add: more zinc, more antioxidants, more leafy greens. But after spending months wading through scientific studies, I realized we're mostly ignoring the elephant in the room. The real danger isn't just what you're missing—it's what you're already consuming that's actively... Read more...
Your Sperm's Silent Roommate: Air, Dust, and the Unseen Hit to Male Fertility
Male FertilityMicroplastics
Air pollution, chemical-laden household dust, and microplastics are now recognized as significant threats to male fertility, with a 2023 analysis in Human Reproduction Update finding that average sperm concentration has dropped by more than 51% since 1973 across multiple continents, a decline too steep and widespread to be explained by personal habits alone.You wouldn't skip leg day because you know the work shows up in the mirror and on the bar. You track sleep because you feel the difference in your energy and focus. For years, we've treated fertility the... Read more...