During puberty, your dick grows because special harmones are present which allows the HGH to enlarge the male genitals while these harmones are present. After puberty, these harmones are no longer present such that HGH no longer acts to increase the male genitals.
I believe UM1991 already said this, but in a more breviated format.
Can you elaborate on what harmones (sic) are present during puberty which allow the endogenous HGH to enlarge the penis? I keep hearing that during puberty there are androgen receptors and that somehow after puberty they disappear. This is illogical. I want to know more about what hormones and or receptors are present during puberty that are not there after. Thank You.