Since the 1800s, the levels of testosterone has been steadily rising in males across the world. The increase in male testosterone has increased strength, speed, height, energy, and aggression. The downside is that health and lifespan had been declining. Males are burning out and dying much earlier than normal. By the 2000s, the effects have become the norm around the planet, with males producing thousands of times higher than centuries before. The average life expectancy for men today is now between 35 and 45 years of age.
Women have largely been unaffected by this change. Females also produce increased testosterone, although a much lesser amount than males. With this change happening in the species, it should be logical to expect some increase in female production rates as well, with affects being deeper voices, hair, and other physical changes. And yet, rates have been steady throughout the world.
I need a way to explain why the testosterone increase is occurring in one sex but not the other, despite them producing the same hormone. How would men's metabolism change this much?