For many women who are planning pregnancy, the concept of ovulation becomes central. We learn to track its symptoms and determine fertile days. But what to do if ovulation does not happen at all? This condition is called anovulation and is one of the most common causes of female infertility. Understanding its nature, causes and symptoms — the first step to solving the problem.
What is anovulation?
In simple terms, anovulation is the absence of ovulation during a menstrual cycle. That is, the ovary does not release a mature egg. It is important to understand that with anovulation a woman may still have menstrual‑like bleeding, creating the illusion of a normal cycle. However, without the release of an egg conception is impossible.
Anovulation can be temporary (for example, due to stress) or chronic, requiring medical intervention. It is not a disease in itself, but rather a consequence of other disturbances in the body.
Main reasons why ovulation may not occur
A woman's body is a complex hormonal system. A disruption at any level can lead to anovulation.
- Polycystic ovary syndrome (PCOS): This is the most common cause of chronic anovulation. In PCOS hormonal imbalance (including excess male hormones and insulin resistance) prevents follicles from maturing normally. They grow but do not "burst" to release the egg, turning into small cysts.
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Dysfunction of the hypothalamic‑pituitary axis: The brain (specifically the hypothalamus and pituitary) controls the ovaries by sending hormonal signals. If this connection is disrupted, the ovaries do not receive the "command" to ovulate. Causes may include:
- Severe chronic stress: Excess cortisol can "shut down" reproductive function. Learn how to cope with stress.
- Excessive or insufficient body weight: Fat tissue participates in hormone production. Its excess or deficiency disrupts this balance.
- Excessive physical exertion: The body perceives this as stress and switches to "energy‑saving mode".
- Thyroid disorders: Both hypothyroidism (underactive) and hyperthyroidism (overactive) can interfere with reproductive hormones and block ovulation.
- Hyperprolactinemia: Elevated levels of the hormone prolactin (which is responsible for lactation) suppress ovulation.
- Age factor and depletion of ovarian reserve: As menopause approaches, cycles more often become anovulatory. Read more in the article "Age and Fertility".
How to suspect anovulation?
The main symptom is a disturbance of the menstrual cycle. Pay attention if:
- Your cycle is very irregular (sometimes short, sometimes long).
- You have no periods for several months (amenorrhea).
- You do not notice characteristic ovulation symptoms, such as changes in cervical mucus.
If you encounter such problems, our article about irregular cycles and conception may be useful.
What to do? Diagnosis and treatment
Anovulation is a condition that requires diagnosis by a doctor. Do not self‑medicate. To determine the cause, a doctor may order:
- Blood tests for hormone levels.
- Ultrasound monitoring (folliculometry) to track follicle growth.
Treatment fully depends on the cause. It may involve lifestyle correction, treatment of the underlying disease (e.g., thyroid) or medication to stimulate ovulation. More details can be read in the sections about identification of fertility problems and infertility treatment.
Remember, the diagnosis "anovulation" is not a verdict, but only an indication that your body needs attention and help. Timely consultation with a doctor is the key to solving the problem and achieving your dream of parenthood.
