Here's why:
* Insulin is primarily responsible for regulating blood sugar levels. While it plays a role in overall metabolic health, it doesn't directly influence the hormonal processes involved in menstruation, ovulation, or pregnancy.
Hormones that directly regulate human reproductive cycles:
* Estrogen: Plays a crucial role in the development of female reproductive organs, regulating the menstrual cycle, and supporting pregnancy.
* Progesterone: Prepares the uterus for pregnancy, maintains the lining of the uterus during pregnancy, and influences the development of the mammary glands.
* Follicle-stimulating hormone (FSH): Stimulates the growth and development of follicles in the ovaries, which contain eggs.
* Luteinizing hormone (LH): Triggers ovulation, the release of an egg from the ovary, and helps stimulate the production of progesterone.
Let me know if you have any other questions.