Science Weekly Are men being misled over testosterone?
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Jan 29, 2026 Prof Channa Jayasena, clinical professor in reproductive endocrinology and andrology at Imperial College London and chair of the Society for Endocrinology, explains how social media is fueling a craze for testosterone. Short segments cover targeted clinic marketing, testing pitfalls, when treatment is truly needed, fertility and health risks, and how lifestyle changes can restore levels.
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Personal Search For A Quick Fix
- Sam felt constant fatigue, brain fog and weakness and was diagnosed with low testosterone after GP tests.
- He sought private men's clinics after long NHS waits and was quickly offered TRT as a fix.
Testosterone As A Health Barometer
- Channa Jayasena calls social pressure and easy online supply a 'perfect storm' driving men to seek testosterone.
- He emphasises testosterone often reflects health status like obesity or diabetes rather than being the root cause.
Testing Limits And Normal Ranges
- Measuring testosterone is tricky due to large natural variation and daily changes, so test timing matters.
- Men can be offered TRT despite having levels normal for them because defining 'normal' is difficult.