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Science Weekly

Are men being misled over testosterone?

Science Weekly

The Guardian

Science

4.21K Ratings

🗓️ 29 January 2026

⏱️ 18 minutes

🧾️ Download transcript

Summary

If TikTok influencers are to be believed, testosterone, or T, is the answer to everything from fitness frustrations and fatigue to low libido. But doctors are warning that social media misinformation is driving men to seek testosterone therapy that they don’t need. This in turn comes with risks for health and fertility. In part one of a miniseries exploring the popularity of testosterone, Madeleine Finlay hears from Prof Channa Jayasena of Imperial College London, who is chair of the Society for Endocrinology, about how this craze is manifesting in NHS clinics, and from ‘Sam’ who tells Madeleine about his own journey with the hormone. Help support our independent journalism at theguardian.com/sciencepod

Transcript

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0:00.0

This is The Guardian.

0:11.4

This journey started in my early 20s when I just all of a sudden wasn't really feeling too well.

0:18.2

I was just always having fatigue issues. I was having brain fog.

0:23.5

I just felt weaker than usual. When Sam, not his real name, realized that his haziness and

0:30.8

exhaustion weren't going away, he went to his GP. After some blood tests, they discovered he had

0:37.1

low testosterone. To bring his

0:39.4

levels back up, the doctor suggested losing weight. I went and tried to lose weight and I did

0:45.3

after a few years of up and down bubbles, but when you do have low testosterone, losing weight

0:50.6

is insanely difficult. Sam was stuck, feeling bad and facing long NHS waiting lists.

1:00.9

I said, you know what? I think I need to actually take matters into my own hands.

1:05.7

And of course, I was targeted by ad campaigns online on social media, and I had loads of different male clinics in my head.

1:13.2

You might have seen some ads for male health clinics yourself,

1:16.3

or influencers talking about low tea and espousing the benefits of testosterone replacement therapy,

1:23.5

otherwise known as TRT.

1:25.9

It's becoming an increasingly popular option for men struggling with

1:29.8

issues like low libido, fatigue and poor concentration. I reached out to one of them and for the

1:36.6

first time I felt a bit heard and I was like, oh, so, you know, I'm not, I'm not going crazy. These

1:41.3

symptoms are because of that. And after a long conversation with one of the doctors at one of these male clinics,

1:47.8

he immediately recommended me to go on testosterone replacement therapy.

1:51.6

Testosterone's appeal goes beyond health, tapping into an idea of masculinity based on muscles,

1:58.3

high sex drive and dominance.

2:00.8

No morning would. Not good.

...

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