Testosterone provides the hormonal foundation for masculinity, determining what it means to be male. So what does a global decline in testosterone levels say about the current generation of men? Why is the greatest testosterone decline seen in American men under the age of thirty?

A broken, reactive medical system isn't concerning itself with answering these questions. The medical profession classifies testosterone loss as "testicular dysgenesis syndrome." Calling a condition a syndrome, however, is just a fancy medical term for "we don't know why this is happening." When a condition...