... testos-terone and estrogen, nicknamed “the mother hormone,” the Zeus and Hera of hormones; robustly present in youth, wanes to nothing in old age. Androstenedione—the mother of testosterone in ... progesterone, and testosterone change every day of the month Huge increases in proges-terone, estrogen Oxytocin; cycling estro-gen, progesterone, and Erratically cycling estro-gen, progesterone, ... L ife Major Hormone W Females HChanges T Males Don’t FGPSPBreast feeding Child rearing PMPtestosterone increase and Oxytocin, prolactin testosterone testosterone female-specific...