By: Infertility-Fertility Over 40

From: http://infertility-fertility.blogspot.com/2008/01/vitex-chasteberry-for-fertility.html

 

Chaste tree berry acts on the hypothalamus and pituitary glands by increasing luteinizing hormone (LH) production and mildly inhibiting the release of follicle stimulating hormone (FSH). The result is a shift in the ratio of estrogen to progesterone, in favor of progesterone. The ability of chaste tree berry to raise progesterone levels in the body is an indirect effect, so the herb itself is not a hormone.