A study out of The University of Hong Kong discovered that around 54% of smokers with erectile dysfunction significantly reduced their symptoms within half a year by quitting smoking. Of the patients who maintained their habit, only 28% reported better sexual performance within a six month period. Based on these findings, giving up nicotine gives ED sufferers a 91% greater chance of curving their sexual dysfunction and improving their sex lives. The study involved 700 male smokers between 30 and 50 who suffered from impotence.
Similar research in 2005 out of Wake Forest University found that male smokers with
high blood pressure are 26 times more likely to have erectile dysfunction than nonsmokers with high blood pressure.
Also, a 2006 Australian study involving over eight thousand men discovered that smoking boosts a man's chances of having erectile dysfunction by 27%. This study also found that the more men smoke, the greater their chances of being impotent.
Nicotine constricts blood vessels, making it more difficult to have and sustain an erection. Years of smoking can permanently damage the arteries, which makes some cases of impotence among lifelong smokers nearly impossible to correct.