Does estrogen help breasts get enlarged?

Yes and no: If you are talking about pre treatment of a male preparing for a sex change operation, then perhaps yes. Otherwise, you would have to use such large doses on a woman that the side effects would be intolerable and dangerous.

Yes but complex: Estrogen levels peak at mid cycle causing breast duct enlargement whereas Progesterone peaks just prior to menstruation and is associated with lobular growth. This will vary from one woman to another dan be related to family history, or caffeine or weight. If atypical for you consider pregnancy test. Birth control may help to ease. Seehttp://www.Nlm.Nih.Gov/medlineplus/ency/article/003153.Htm :.