I know there’s all this debate about Propecia and ED……and whether or not there’s a placebo effect or the power of suggestion at play. Have you seen this study from 2008?
This was published in the Journal of Andrology in late 2008, but I don’t remember if we wrote about it before. Thanks for sending in the link.
Based on this study, finasteride was associated with a significantly higher proportion of erectile dysfunction (ED) in patients that were informed of possible erectile side effects as compared with patients for whom the same information was withheld. For patients taking the 5mg finasteride to treat BPH, the incidence of ED was 9.6% for the group without counseling and 30.9% for the group with counseling (source: Mondaini et al, 2007).
The abstract concludes: “We conclude that 5 a-reductase inhibitors do not lead to erectile dysfunction to a significant degree, and we support the position that dihydrotestosterone is less relevant than testosterone in erectile function.”