This paper was published in July in the International Journal of Impotence Research. The full text is available at
The authors note that about 40% of men who undergo radiation therapy (RT) experience erectile dysfunction. The PROTECT trial reported that erectile function decreased from pre-treatment baseline to 22% in the radiotherapy group by the 6th month.
This new study was in rats, not people, so it needs confirmation. The results were quite strong; treating rats with resveratrol after RT reversed several of the measures of damage they examined.
The authors conclude that
Resveratrol, due to its strong antioxidative effects, was able to preserve the important metabolic pathways involved in erectile function and also provided functional protection as demonstrated with ICP (Intracavernosal pressures inside the penis) measurements.
Resveratrol, a potent antioxidant, can potentially be used as a supplementary agent in patients who undergo radiotherapy in order to protect the erectile function caused by the concomitant RT-induced oxidative stress. Nevertheless, these results should be reinforced with further clinical studies.
While a clinical study would be nice, many men here are facing the prospect of RT in the very near future, or may have just begun or completed a round of RT.
Resveratrol supplements have been around for a while. They are unlikely to hurt you. This study shows that there are good reasons to think resveratrol will protect and preserve the ability to get and maintain erections.
So, small chance of harm, unknown but probably much larger chance of real benefit. If you don't mind the cost, it seems like an easy choice.
I take Longevinex brand. No financial interest, just a satisfied customer. They fund some scientific research and make a good case that their product is better protected against oxidation and degradation than most competitors.