The graph of male testosterone levels looks very similar to this one. I'm not suggesting there's necessarily a correlation between the two, but modern life is taking its toll on our health.
Life expectancy may be longer in present times, but quality of life is in some ways lower (a notable exception to that is the status of even relatively minor infections, which were frequently fatal in pre-modern life).
Life expectancy may be longer in present times, but quality of life is in some ways lower (a notable exception to that is the status of even relatively minor infections, which were frequently fatal in pre-modern life).