Addition of Progesterone Leads to Increased Breast Growth for Transgender Women

"Among our 90 participants we repeatedly used 3D-scanning techniques to measure breast volume and saw up to an increase of 30%. Crucially, we also saw that the study participants were more satisfied with the size, shape and the growth of their breasts compared to participants who did not use progesterone,” adds Raya Geels, PhD candidate at Amsterdam UMC and the study’s first author.