Data presented earlier this week shows testosterone levels in men have fallen by half over the past 50 years.

This Wellness Wednesday on Midday Edition, we learn more about what testosterone is and how it shapes men's health.

We also talk about some of the challenges in treating men today, in a culture where social media medical advice and easy-to-order treatment options abound.

Guest:

Dr. Ryan Nasseri, urologist, assistant professor, UC San Diego Health