Drew- I actually just quit propecia after being on it for 5 years due to side effects so I completely understand your concerns. I do know a bunch of guys who are on the drug and have no sides at all. I have the same concerns about blocking dht for extended periods of time and what that may do to the endocrine system. You could always try propecia and if you experience any sides discontinue immediately. If you do decide to go that route make sure you get a prescription for proscar and cut the pills in four. Proscar is the same drug at higher dose and you can get it at Target or Walmart for $9 without insurance. This will save you over $60 a month and since your a young guy I'm guessing you don't have money to burn. Your still a little young to be considering transplants anyway so I think you are on the right path. Like I stated in an earlier post I'd try the partial piece first and take it from there.