Will my boobs sag if I don’t wear a bra? And 5 other common questions about breasts and bras

By Amanda Meyer, Senior Lecturer, Anatomy and Pathology in the College of Medicine and Dentistry, James Cook University
Monika Zimanyi, Associate Professor in Anatomy, James Cook University

We’re all born with mammary glands – better known as breasts. These are made of glandular tissue, fat and the ligaments that attach them to our chest wall.

For roughly half of us – those born biologically female – our breasts will change dramatically in size and shape at puberty. Size is largely genetic: genes explain 56% of the differences in breast size between people. But breasts may also change during pregnancy…

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