Pretty sure he's talking about the literal levels from blood tests. It is actually a very concerning issue.

No. Please view the trailer at https://www.youtube.com/watch?v=IcxLQeh6J6A it's the most homoerotic things I've ever seen, and I work in gay porn

> Tucker Carlson worries about "the total collapse of testosterone levels in American men,"

This is not just him shouting random polemic; this is a scientifically measurable and deeply concerning medical trend. https://www.urologytimes.com/view/testosterone-levels-show-s...

Yes it is and according to what you linked to "According to Lokeshwar, potential causes for these declines could be increased obesity/BMI, assay variations, diet/phytoestrogens, declined exercise and physical activity, fat percentage, marijuana use, and environmental toxins."

Tucker Carlson is using it as a very thin excuse to basically make a series about how men need to be more like a particular cultural concept of men. Here's the trailer for "The End of Men" nowhere does it mention that study or a testosterone drop. Maybe the show itself touches on that but in my opinion that would only be so people like you could justify what is basically a propaganda video for right wing masculine culture.

https://www.youtube.com/watch?v=IcxLQeh6J6A