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MEDICAL NEWS · THE GUARDIAN: HEALTH · 1 November 2026

The truth about testicles: are we facing spermageddon?

Synopsis

In Ireland, a study of 15,000 men between 2008 and 2023 showed a 23% increase in sperm concentration. It’s a negative feedback loop, spermatogenesis is affected, and then there’s poor sperm or no sperm output because of that”.

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