No function, is in my opinion far fetched , hence why so many people as seen on this forum when reducing their dht via these medicines suffer sexual side effects. If it had little function then people would not Be getting these side effects. And’s it why if your trying to conceive with your partner the drug has be to ceased immediately to prevent complications. The drug as I mentioned before helps cognitive function as well as regulating oestrogen , which is why some men taking fin get gyno. Now I agree as you said , a majority of men can take this drug and have no problem , like myself . But I also understand the uneasinesses of so many men pulling the trigger on it , because the reality is while I feel a lot of the fear mongering is over exaggerated, the reality is a lot of men don’t want to take that risk and hence would be apprehensive about taking it as a preventative.