Bryan Johnson· Author
Global data from 1973 to 2018: + sperm concentration declined by 51% + total sperm count declined 55%
Loading…
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.
Global data from 1973 to 2018: + sperm concentration declined by 51% + total sperm count declined 55%
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.
asperm health as a species has declined half in the last 50 years, which is crazy.
how the sperm counts have dropped 50 in the last 40 years
one in three males is now infertile in in our industrialized world
the sperm counts in all Western countries globally all industrialized countries have dropped by 52 to 62% over the last 40 years
the sperm counts in all Western countries globally all industrialized countries have dropped by 52 to 62% over the last 40 years one in three males is now infertile in in our industrialized world
Fertility rates are down 50% in the last decade. Sperm counts are down by 60%.