Recent Blog Articles

Polycystic Ovary Syndrome

April 22, 2019

What Is It?

Estrogen and progesterone are the female hormones produced by the ovaries. The levels of these hormones vary during the monthly menstrual cycle. They are essential to the development of follicles, which are fluid-filled pockets, containing an egg that is released each month.

A third hormone, testosterone, also is produced by the ovaries in small amounts. Testosterone is in a broad class of hormones called androgens, and it is the dominant sex hormone in men. Between 4% and 7% of women produce too much testosterone in their ovaries. These women have a pattern of symptoms called polycystic ovary syndrome.

To continue reading this article, you must log in.

Subscribe to Harvard Health Online for immediate access to health news and information from Harvard Medical School.

  • Research health conditions
  • Check your symptoms
  • Prepare for a doctor's visit or test
  • Find the best treatments and procedures for you
  • Explore options for better nutrition and exercise
Learn more about the many benefits and features of joining Harvard Health Online »

I'd like to receive access to Harvard Health Online for only $4.99 a month.

Sign Me Up

Already a member? Login ».

Disclaimer:

As a service to our readers, Harvard Health Publishing provides access to our library of archived content. Please note the date of last review or update on all articles. No content on this site, regardless of date, should ever be used as a substitute for direct medical advice from your doctor or other qualified clinician.