[Kaitlyn Kitten]

I know breast growth depends mainly on the precarious balance of estrogen and progesterone. Are there certain amounts of estrogen/progesterone that should be present during puberty that create the environment for growth? Like extremely elevated levels? Ive found charts where hormone levels should be for pregnancy, which could be helpful but not exactly what I'm looking for.

Has anyone come across any information... or better yet charts with pictures to dumb this down for me? lolz thanks!