Testosterone therapy is booming, touting a boost at the gym and in the bedroom, but the potential side effects (like infertility) are less well known. WSJ’s Rolfe Winkler on the clinics making millions on this growing industry.

Further Reading:

- Testosterone Clinics Sell Virility. Some Men End Up With Infertility. 

Further Listening:

- Trillion Dollar Shot, Episode 1: Birth of a Blockbuster 

- The Rise of Botox and the Wrinkle in Its Future 

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