I am not a biology student, just a curious person. To be specific, I'm talking about humans and specifically about females. I know that it might apply to other mammals.
What controls the size of breasts?
I have heard about progesterone hormone.
- Is it just progesterone?
- Are there any other factors?
- I have seen a movie in which couple talks about breast size increases after sex. Is it true?
Can somebody give more info on this?