Does losing weight cause your mammogram to look different?

Yes: Weight loss obviously causes your breasts to be smaller and less dense. Your mammograms will look different. Fat doesn't show up on a mammogram; it is the grey in the background. The breast ducts and vessels do show up. If you lose fat in your breasts, you may see more ducts and vessels in your mammogram.

Yes: With the breasts being a fat storage site, a weight change can cause a change in the mammographic density of the breast.

Yes: Generalized fat loss will also involve the breasts. The ratio of fibroglandular tissue to fatty tissue will increase, and the breasts will usually look more dense on mammography.