Erich: I saw your advert in the paper benefits of retin-a acne scars “Having dense breasts means having much more glandular tissue in the breast than fat,” explained Dr. McIntosh. “As we get older, a lot of the glandular tissue in the breast changes and become fatty tissue. Fatty tissue in a mammogram looks sort of gray-black. Tumors look white, so it’s very easy to see white tissue on a gray background. But in dense breasts with more glandular tissue, it looks white, so it’s hard to see a white tumor on a white background.”