[Dynseli]

Lower androgen levels are correlated with larger breast sizes, especially during the luteal phase, as androgens block estrogen receptors.

LH raises testosterone levels, and LH is also correlated with high estrogen levels. Small amounts of androgens are necessary for normal function. Testosterone can be converted into estrogen via aromatase or DHT via 5-alpha-reducatase enzymes. Excessive DHT causes unwanted effects, while testosterone has minimal unwanted effects.