Blood Supply to the Bald Scalp

This is a question asked in reference to our post from earlier this week, Do Bald Guys Have a Full Head of Hair That Just Won’t Grow?:

So does this mean that if a man has mild thinning, you can transplant hair to that region and the thinning hair will receive more blood and possibly flourish again? Or, are those cells still going to miniaturize because they have a receptor(s) for balding?

The notion that thinning hair from balding is a blood supply problem is not true. The loss of blood supply in the thinning or balding scalp is the reflection of loss of hair (not the other way around). When you get a transplant into a thinning scalp with reduced blood supply, there is an increase in the blood supply because of the demand from the new hair. It is not a chicken/egg type of thing.

The loss of the blood supply came after the hair is killed off from the genetic balding process.