Mind Pump host claims measured testosterone and male fertility have declined since the 1950s

What was said

"since the 1950s, okay, since we've measured since we've been measuring testosterone levels in men, there has been a consistent general decline in testosterone in men. There's also been a general decline in fertility in men."

Mind Pump host says there is “decent data” suggesting a general decline in measured testosterone levels in men since the 1950s and a decline in male fertility. The host adds that the exact figures may vary and suggests possible contributors—such as inactivity, diet, obesity and chemical exposures—while stressing that the cause is not certain.