There are several causes that can cause us not to ovulate. One of the most common is Polycystic Ovary Syndrome, a benign condition that affects many young women. It consists of an endocrine disorder that does not allow correct ovulation.
There could also be anovulation of hypothalamic or pituitary cause, such as intense physical exercise, low weight, etcetera. Other hormonal alterations such as alterations in thyroid hormone (TSH) or prolactin, can cause ovulation not to occur properly.

Advanced age would also be a cause why, in spite of having periods, in many cycles ovulation does not occur regularly.
Read the full article on: What is anovulation? – Causes, symptoms and treatment ( 97).
Read the full article on: When does ovulation occur – what are the signs and symptoms of it? ( 57).
Read the full article on: What are they and what happens in the different phases of ovulation? ( 37).

Laura García de Miguel
M.D., M.Sc.
Bachelor of Medicine and Surgery from the Autonomous University of Barcelona, with specialization in Obstetrics & Gynecology at Sant Joan de Déu University Hospital. Master's Degree in Human Reproduction from the Complutense University of Madrid. Currently, she is the Medical Director of Clínica Tambre in Madrid, Spain.
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