Men grow up with a comforting, sweet story about fertility. That it only belongs to women. That sperm ages gracefully. That biology never comes calling. The data tells a different story. Large population studies show male fertility begins declining in the mid-to-late 30s, with a steeper drop after 40, even when a partner’s age stays […] The post This Is When the Male Biological Clock Officially Starts Ticking appeared first on VICE .