Dydrogesterone does not inhibit fibroids because the uterus is a hormone-dependent organ and the growth of fibroids is also influenced by estrogen and progesterone. If the estrogen and progesterone in the body are high, the growth of fibroids will be facilitated, so dydrogesterone cannot inhibit the growth of fibroids, but will promote the growth of fibroids. As a simple example, after pregnancy, the significant increase of estrogen and progesterone causes fibroids to grow significantly during pregnancy, and some people who did not have fibroids found them after pregnancy, and they can even grow to 4-5cm. cannot suppress fibroids.