Andrew Huberman· PhD
it is now very clear that that's correlated with reduced sperm counts and lower sperm motility
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The evidence is convergent. Multiple independent sources reach the same conclusion, the underlying mechanism is well-characterized, and even the field's most cautious voices treat it as worth doing.
it is now very clear that that's correlated with reduced sperm counts and lower sperm motility
Every Sunday: the week’s new conflicts and verdict changes — and nothing else.
Native comments, Twitter mentions, and Reddit threads about this claim — surfaced together so the conversation isn't fragmented across platforms.
Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.
Would love a "what would change this verdict" RSS feed. Sign me up if it exists.
To our knowledge, this is the first report of any correlation (esp in the same person over two timepoints) between blood and semen microplastic levels, demonstrating successful microplastic detoxification in the semen following that in the blood.
Studies show that 100% of men have microplastics in their semen.
Five published studies have measured microplastics in human semen. Two found them in 100% of men. The other three found then in 44 to 76% of men tested, but those used methods that miss the smallest particles and the clear ones.
Corrected for that, the real rate is likely 100%.
The 18 month window also captures roughly 7 full spermatogenesis cycles.
Ejaculate levels are 238% higher than blood.
+ 167 microplastic particles in 1 ml of ejaculate + 70 microplastic particles in 1 ml of blood
I have microplastics in my ejaculate. 2x the concentration than my blood.
To our knowledge, this is the first report of any correlation (esp in the same person over two timepoints) between blood and semen microplastic levels, demonstrating successful microplastic detoxification in the semen following that in the blood.
In a study of 40 healthy young men, all were found to have microplastics present to some degree in their semen.
In a study of 40 healthy young men, all were found to have microplastics present to some degree in their semen.