I don’t know if there has been any study of the sort, but if we’re ever going to get down to the root of this problem, there has to be insight into the inherent hormonal/physiological differences between men who suffer from fin side effects, and those who do not.
Furthermore, there should be studies into permanent side effect sufferers, and non-permanent suffers.
If differences are present, then it can offer valuable information to a resolution.
This is true. To bad putting together a scientifically valid study would most likely never happen.