Breast Development in Transwomen After 1 Year of Cross-Sex Hormone Therapy: Results of a Prospective Multicenter Study
Mean breast-chest difference in centimeters over duration of CHT in months. For each time point, the mean increase in centimeters (dot) with 95% CI (bars) is shown. Data in the legend are shown as mean increase with 95% CI.
Gained bra cup sizes in 197 transwomen after 1 year of CHT. Data are shown as percentage of transwomen per cup size.
Mean breast-chest difference in centimeter over duration of CHT in months, stratified for age in four groups. (a) Weight change in three groups (b), normal weight (BMI < 25 kg/m2), overweight (25 kg/m2 ≥ BMI > 30 kg/m2), and obese (BMI ≥ 30 kg/m2) BMI ©, smokers vs nonsmokers (d), oral vs transdermal estradiol administration route (e), and four quartiles of serum estradiol levels (f). Mean serum estradiol levels in the center-specific quartiles were 110 pmol/L−1 (first quartile), 184 pmol/L−1 (second quartile), 271 pmol/L−1 (third quartile), and 452 pmol/L−1 (fourth quartile) in Amsterdam, and 142 pmol/L−1 (first quartile), 206 pmol/L−1 (second quartile), 299 pmol/L−1 (third quartile), and 567 pmol/L−1 (fourth quartile) in Ghent. For each time point, the mean increase in centimeters (dot) with 95% CI (bars) is shown.
More data is definitely needed here. This study is from a few years ago. Need data on a longer timeline and examining factors like dosage, blood E and T levels, progesterone, weight gain, etc. Anecdotally from my experience growth has been ongoing throughout my entire transition.
Yeah it slowed down after a few years but I’ve been on HRT for 8 years and still get a tiny boost here and there
If you have more articles, like more recent ones, I would be interested.
One of the other confounding factors potentially is that this is from those who first got HRT from gender clinics, so would exclude those who were driven to self-med or go private.