
Originally Posted by
GearHeaded
good question, but..
I don't think blood serum levels of DHT are the issue. DHT isn't floating around in the blood waiting to be bound to hair, prostate, etc.. DHT is generally "locally expressed" , meaning the 5-alpha reductase is located in, for example the prostate tissue itself, and its here that DHT is created and bound (its not coming from blood serum levels of DHT).
I'm no expert on DHT's localized expression in hair , but pretty sure its just like the prostate and DHT is made in the hair foilc itself (by the 5 alpha reductase) and then bound their locally at the same time
HOWEVER - amino acid proteins, collagen, etc.. that would be responsible for growing and repair hair IS found in the blood stream . so blood flow to the hair would be important for growth
note: when you use a DHT blocker, your not blocking DHT in the blood, your blocking the local enzyme (5 alpha reductase) in a given tissue from locally expressing/making DHT in that tissue and allowing it to bind