Hormones

Hormones

Estrogen and Progesterone

Estrogen and progesterone are the two main female sex hormones, and they’re made by specialised cells in the ovaries. The changing levels of these two steroidal hormones determine the length and health of a woman’s menstrual cycle by altering: The function of the ovaries Growth and receptivity of the uterus lining Shape and functi...

Fertility Health, Hormones

Phases of the Menstrual Cycle

There are actually four phases in the menstrual cycle, although it’s usually divided into two phases of about 14 days each, with the period and ovulation marking the beginnings and ends of them: The “follicular phase” starts with the period and ends at ovulation The “luteal phase” begins at ovulation and ends wit...