Who do you think triggers these hormones to start being produced?
There's a lot we can do with science that affects our bodies, i.e. steroids. Your citing behavior after hormone manipulation doesn't make sense.
God works slowly on people, once he makes a decision your basically stuck with it. He would not cure balding magically or otherwise just because a person changed their character or repented and reformed.
God might work slowly, but hormone manipulation works fast and predictably. I'm not sure why you'd choose God over hormone manipulation. One is something which is proven to work and proven to work fast, one is riskier, slower-acting and you are on the whims of someone.
