Dr Michael Carroll
speaker
100 appearances
1 recordings
1 series
first heard Jul 2026
last heard 14 Jul
Dr Michael Carroll’s voice in public audio — every appearance, attributed to the second.
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recordings per month · last 12 monthsRecordings per month over the last 12 months — 1 in all, peaking in Jul 2026 with 1.
Appearances
But the data is still emerging.
The things that definitely cause post-sperm quality is anabolic steroid use.
And people who take testosterone replacement therapy, or TRT,
We see an increased growth in that.
Men are influenced by social media pundits who are saying take these TRTs and it'll invigorate you if you have low testosterone.
Taking those and anabolic steroids definitely can damage sperm quality or testicular health.
Obesity is another one.
The decline in testosterone is not a new notion.
It's been recognized for a few years now.
It's most likely linked to lifestyle factors.
So sedentary lifestyle, lack of exercise, poor diet, in particular processed foods, chronic stress is another one, again, lack of sleep.
So it's multifactorial.
Taking testosterone, exogenous testosterone, is not healthy without proper clinical investigation.
If you take exogenous testosterone, like anabolic steroids, for instance, that tells the brain that there's enough testosterone swimming around or floating about in the body.
You don't need to tell the testes to produce anymore.
So it shuts that system down.
And then that's where you have poor sperm output.
It can be.
And I think what's happening in the US, the science is becoming politicised.
There's a massive step back in science in the US, which is unfortunate.
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