Well I'm in bodybuilding game for about 12years and I had 0 problems with sexual health. Yes, when you lift heavy and come home with 0 energy you will not want to have sex with your partner, but after good meal and some rest all is good. Also we have toddler and I got her pregnant pretty fast so... No, bodybuilding never effected my sexual health. Your friend probably used something cheap. Cheap chemicals... When you lift weight naturally you won't have any problems only benefits - healthy body & healthy mind.