There exists also significant variation in dimension between people today. Lasting breast progress in the course of puberty is attributable to estrogens at the side of The expansion hormone. Woman humans are the only mammals that completely produce breasts at puberty; all other mammals create their mammary tissue through the https://grok.com/share/c2hhcmQtMw%3D%3D_5ad6450c-533d-442c-a09c-9f7bce1babfb