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A member asked:
What is responsible for only one breast enlarging prior to menstruation?
3 doctors weighed in across 2 answers
Normal development: It is completely normal for one breast to begin enlarging before the other breast prior to menstruation. Don't worry, the other breast will also begin to develop soon.
Answered 9/28/2016
5.6k views
Have u mentioned 2MD: I am not sure that this is normal. It is very common for one breast to be bigger than the other but not necessarily to be more hormonally responsive. I would discuss with your gynecologist. You re young but you need a breast examination and possible diagnostic imaging.
Answered 7/28/2013
5k views
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