Breast Size in Relation to Endogenous Hormone Levels, Body Constitution, and Ora

[Myself]

http://aje.oxfordjournals.org/cgi/content/abstract/145/7/571

Helena Jemström and Hakan Olsson
Department of Oncology, University Hospital Lund, Sweden

Reprint requests to Dr. Hakan Olsson, Department of Oncology, University Hospital, S-221 85 Lund, Sweden

In 1993 and 1994, the relation between breast size and hormonal factors and body constitution was studied in 65 healthy nulligravid women aged 19–25 years. Twenty-five women were current oral contraceptive users, 20 women were former users, and 20 women had never used oral contraceptives. Breast size was strongly positively correlated with current oral contraceptive use during menstrual cycle days 5–10, as well as days 18–23. No significant effect of former oral contraceptive use was seen on breast size. A significant increase in breast size between cycle days 5–10 and days 18–23 was seen among current oral contraceptive users. Breast size was significantly positively correlated with body mass index (weight (kg)/height (m)2), height, and weight in nonusers (i.e., former and never users combined) but not in current users. In nonusers, during the follicular phase, breast size was significantly positively associated with insulin-like growth factor 1. During the luteal phase, larger breast sizes were significantly associated with higher 17ß-estradiol and progesterone levels and lower testosterone levels among nonusers. In models for current users, large breast sizes were significantly associated with high prolactin and luteinizing hormone levels and low follicle-stimulating hormone levels during cycle days 5–10. During cycle days 18–23, larger breast sizes correlated with low endogenous progesterone levels.

body constitution; breast; contraceptives, oral; estradiol; hormones; insulin-like growth factor I; sex hormone-binding globulin; women

[Bellaon7]

I'm not sure what exactly is the motivating factor of your post, but as it relates to mtf ts's, the earlyer you start, the bigger they'll get until sometime in your 20's, then the playing field start to dramaticly even out. More importantly there's no way to get an accurate estimate before starting hrt. I have 2 sisters, both share the same father & mother, one is very large, the other small. Our mom has large breasts, I only have A's after 8yrs of hrt.