... investigated the role of dense and fatty breast tissue in relation to breast cancer risk. We foundthat not only a large area of fibroglandular tissue is asso-ciated wit h a h igher breast cancer risk, ... percent of mammographic density and absolute dense (fibroglandular) area are strong breast cancer risk factors. The role of non-dense (fat) breast tissue is not often investigated, but we hypothesizethat ... 1.00* Adjusted for age at examination, height, age at menarche, age at first delivery (nulliparous, ≤25 years at first delivery, >25 at first delivery), number of child ren, age at menopause (premenopausal,...