A member asked:

Is breast size genetic?

10 doctors weighed in across 2 answers
Dr. Devon Webster answered

Specializes in Medical Oncology

Yes, mostly: Breast size is mostly a result of genetics. A recent paper showed there are seven distinct genetic changes associated with large breasts. Other factors include your weight, nutritional status, pregnancy status, medications, and the overall height and weight of your mother.

Answered 4/25/2019

5.7k views

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Partially: Breast size is related to genetics, hormones and body fat.

Answered 6/22/2017

5.4k views

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