Ask HN: Is there any legit hair loss research?

I'm in my mid twenties and slowly been going bald over the last few years. Not ideal but also not the end of the world. Baldness has been around for at least several thousands of years. However, we have made a lot of technological advances in recent times, many of which improve our lives in fairly superficial ways. Nonetheless, it seems that hair loss is the realm of miracle cures, sketchy companies and con artists. Let's just say googling "scientifically proven hair loss treatment" isn't going to get you very far!

The only semi-legit treatment I know of is Finasteride. However, the Wikipedia article is pretty light on the supporting research, and extremely light on references to studies about its perceived side effects.

I was wondering, does the Hacker News crowd know of any legitimate research into male pattern baldness; causes and treatments, that are backed up by scientific evidence? In particular I'd be interested to know of the existence of any peer reviewed studies from respectable institutions.