Ian Sample
speaker
2,123 appearances
29 recordings
3 series
first heard Apr 2026
last heard 5d ago
Ian Sample’s voice in public audio — every appearance, attributed to the second.
Trend
recordings per month · last 12 monthsRecordings per month over the last 12 months — 29 in all, peaking in Jun 2026 with 8.
Appearances
The sound design was by Joel Cox and the executive producer was Ellie Burek.
We'll be back on Thursday.
See you then.
According to Manosphere Bros, right-wing pro-natalists and the US Secretary for Health, we're currently experiencing an existential crisis of male fertility.
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Today, the average teenager in this country has 50% of their sperm count
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50% of the testosterone is a 65-year-old man.
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Usually, we might raise an eyebrow at these sorts of claims, but a new study suggests they might not be wildly off the mark.
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So if testosterone levels have dropped a whopping 50% in 50 years, why?
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What does it mean for men's health?
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And can anything be done to reverse the trend?
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I'm The Guardian's science editor, Ian Sample, and this is Science Weekly.
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Hannah, as science correspondent, you've reported on this astonishing finding that testosterone levels in men have more than halved between the 1970s and 2020.
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Where's this come from?
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Let's dig into this.
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As you said, it's a meta-analysis.
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It brings together a number of previously published papers.
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Does that mean that endocrinologists have been aware of this for a while?
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This is a really big statement to make that testosterone is halving.
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Have you talked to other scientists about this study and what do they make of it?
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Hannah, if this is a real trend, the key question is why?
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Showing 1321–1340 of 2,123 · page 67 of 107
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