See below: Aside from psychological factors, smoking (and tobacco use) is likely the most common cause of erectile dysfunction (ED) in men under age 35-40 because of the vasoconstriction property of nicotine. Numerous studies have shown the benefits of stopping smoking and the restoration of erection function and quality. There are most likely other factors causing your ED: anxiety, stress, psychologic, etc
Answered 12/27/2017
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