Dr Shanna Swan - Why Are Men’s Testosterone Levels Plummeting?

Multiple signals suggest testosterone is declining worldwide

Dr. Shanna Swan explains that while definitive worldwide testosterone decline data is still being finalized, multiple signals including rising clinical testosterone use by young men and published studies point to a worrying decline trend.

"there are a number of papers published that we think are pretty authoritative that talk about declining testosterone. But the other thing that we can look at, which is different from doing a literature review, you can say, well, how is it clinically? And there's a lot of data showing that the use of testosterone, particularly by young men has been climbing alarmingly actually."

Young men using testosterone for body dysmorphia versus actual low T

The conversation explores whether the rise in testosterone use among young men is driven by genuine low T symptoms like erectile dysfunction and low energy, or by body dysmorphia and unrealistic media representations of masculinity.

"is in trouble. Yeah, obviously one of the challenges we have here is our young men taking testostero because they are suffering with the effects of low T, erectile dysfunction, low energy, low mood, etc, etc. Or is it because of increases in body dysmorphia or unrealistic representations of men"

Why sperm count data is more robust than testosterone data

Dr. Swan explains the paradox that sperm count data is more comprehensive than testosterone data, despite the fact that more men today know their testosterone levels than their sperm counts, due to differences in research methodology and history.

"Why is it the case that you have more verifiable data around sperm count than you do around testosterone levels? I would have thought that testosterone levels would have been more widely available."