'Taint hard to find a physical link to male fertility

A study of 117 men found a key difference between guys who had kids, and guys who were being treated for infertility. Anogenital distance is, as you might guess, the distance between where your balls stop and your anus begins. The average measurement for the fertile men was 44.6 millimeters. For the infertile men: 31.8 mm. Even more tellingly, sperm density, and the number of active sperm, increased by leaps and bounds for every extra millimeter of anogenital distance. Another recent study found very similar results. Cory posted about that earlier research a few weeks ago.