Male fertility is plummeting globally, with sperm counts dropping over 50% in four decades, yet most men remain unaware that their reproductive health is a 'sixth vital sign' for their overall longevity. While environmental toxins and microplastics play a role, common physical issues and even the misuse of testosterone therapy are silently sabotaging male potential. The solution lies in a radical shift toward self-awareness and intentional lifestyle changes that protect both your future family and your long-term health.