Youngukdude: between you and me, because everyone else is gonna laugh, I think proteins might have a connection with hair loss.
I have never ever had any problems with hairloss and my hairline today after shedding ALOT is close to HairLossTalk.com four years ago (if you look at his pictures) and I´m 29.
Nov 2003 I thought, stop with cardio (I weigh 72kg/183cm) and go more with building muscle. I added alot of proteins and fats (or I ate alot of cashew nuts) to my diet and completly stopped with the cardio = four months of non stop shedding, which I didn´t notice because I had so much hair, I never even had a itchy scalp, well maybe some but not much.
In my life it´s pretty easy to see patterns. I´m very boring with food so I can tell you what I had for dinner the past 6 months, I live a very repetative life so I can point to things that have changed. What did change before my hairloss was no cardio, switched from carbs to proteins and got hooked on cashew nuts, put on some muscle and kept lean.
Summaries.
More cholesterol - which is what testosterone is made of
Less cardio - which presses down your testosterone
More proteins - which as far as I understand is only good for you?
More sleep - which was very nice