Breasts develop from embryological tissues, and the high estrogen level in females during puberty causes breasts to start growing bigger.
Breasts are mammary glands composed of layers of different types of tissue, including adipose, glandular and connective tissues. As these tissues have hormone receptors, there is often fluctuation in breast sizes and volumes based on hormonal changes in the body.
As breasts are considered a sign of femininity and beauty, women want their breasts to be perfectly shaped and sized. However, at times the breasts become larger in size, which can be due to several factors including genetics, obesity, pregnancy, breastfeeding, hormonal changes in the body and side effects of certain drugs.
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