In this world, women generally live naturally longer lives than men. The typical female lifespan would be 125- 150 years, and a male would be 30-35 years. Our society attributes this to an ancient curse that God placed on the first man for disobeying him in the garden of eden and eating a fruit from the tree of life. While the first man and woman both ate from the fruit and were equally guilty of this sin, they were punished differently. Women would experience pain and possibly death in childbirth, while men would see their biological lifespans drastically reduced. This curse would be passed down through their children and infect all future generations.
I am a scientist who has spent his life rese as researching this topic. Rather than accept the myth portrayed by our religious leaders that has been indoctrinated into us since childhood, I hypothesize that there are biological reasons for the differences in lifespans. Ignoring social and cultural reasons in human society, as well as access to medical care, what in our biology would cause this vast difference between the sexes?