(16-10-2015, 08:16 PM)spoked451 Wrote: Apart from the genetic portion, I thought it was mostly progesterone & maybe prolactin, with the latter having less influence but does play a part. Of course nothing happens without E as well, but for areola & nips you need the other two just as much.
Of course Lotus will correct me...
Lol spoked,
No corrections today.


(just my two cents, lol)
Prolactin, serotonin, oxytocin, blood flow/temperature change, excitation (nipple stimulation) can stimaluate areola expansion. Developing sweat glands/milk ducts could benefit areola expansion. Other options exist imo,.......(creative).
I wouldn't be at all surprised that areolas have their own independent receptors.