Every action has an equal and opposite reaction when it comes to cancer...is it avoidable and preventable? No due to our modern lifestyle and diet, but you can minimise the chances by regular exercise, sufficient sleep, 2 way heterosexual sex (where both the man ans woman give and take at the same time...modern woman sex: men just does the pumping in missionary and she just orgast, no blow jobs, no fingering, not good), minimal masturbation (perhaps once every month and no hands) and a pure diet full of raw greens, simply prepared meat and minimal processed food, and lastly supplements to increase testosterone, reduce cholesterol and inflammation