Breast development occurs in distinct stages throughout a woman's life, first before birth, again at puberty, and during the childbearing years. Available online at http: Photo by: Parents should become concerned if their daughter shows no signs of breast development by age 14 and if by the age of 16, there has not been a menstrual period. Skip to main content.
Follow City-Data. Mammary glands are influenced by hormones activated in puberty. Involution or shrinkage of the milk ducts is the final major change that occurs within the breast tissue.
Interestingly, humans are the only mammals whose breasts develop before they are needed to serve their biological purpose—breastfeeding. Without estrogen, the connective tissue of the breast becomes dehydrated and inelastic, and the breast tissue, which was prepared to make milk, shrinks and loses shape. This is all normal. Tweets by LechMazur. Cosmetic breast surgery is the only way to alter breast size — through either a breast enlargement with implants or breast reduction.