Cycle and ovulation
Anovulation means ovulation is not happening. It commonly shows as absent, very irregular or unusually light periods, and is confirmed with a mid-luteal progesterone test. PCOS, thyroid disease, high prolactin, low body weight and heavy exercise are common causes. Most are treatable, often with ovulation induction once the underlying cause is addressed.
Also known as: anovulatory, not ovulating
Sources
- Royal Australian and New Zealand College of Obstetricians and Gynaecologists (ranzcog.edu.au)
- Healthdirect Australia (healthdirect.gov.au)
Last reviewed: 10 September 2026. Written by the Antega Editorial Team. General information only — always follow the advice of your own clinic, doctor or pharmacist.