Effects of Smoking on Plasma Testosterone Level and Erectile Function in Rats

The results suggest that both the vasoconstrictor effects of smoking and the decrease in testosterone levels after chronic smoking had some effects on erectile function in rats. Park MG, Ko KW, Oh MM, Bae JH, Kim JJ, and Moon DG. Effects of smoking on plasma testosterone level and erectile function in rats. J Sex Med 2012;9:472-481.