Premature Ovarian Insufficiency (Early Ovarian Failure): Causes, Symptoms & Treatment

In short: Premature ovarian insufficiency is the exhaustion of the ovarian reserve before the age of 40. Causes include genetic and chromosome factors such as Turner syndrome, surgery on the ovary, chemotherapy and radiotherapy, and smoking. The lack of oestrogen leads to vaginal dryness, bone thinning and a higher risk of heart disease; it is treated with hormone replacement, and eggs or ovarian tissue can be frozen early.

What is premature ovarian insufficiency (early ovarian failure)?

Premature ovarian insufficiency refers to the decline and loss of a woman’s ovarian reserve before the age of 40. It can affect both fertility and overall hormonal health, and understanding it early can help you make informed decisions about your reproductive future.

It is diagnosed when periods become irregular or stop for at least four months before age 40 and a blood test shows a raised FSH level (above 25 IU/L). The ovaries may still work from time to time, so a small number of women (around 5%) can still conceive naturally.

What causes premature ovarian insufficiency?

• Genetic factors that lead to accelerated consumption of the ovarian reserve, causing it to run out earlier than expected
• Chromosomal and genetic disorders such as Turner syndrome and Fragile X (FMR1) premutation, which is why chromosome and FMR1 testing is recommended
• Surgical procedures (removal of part of an ovary or removal of an entire ovary)
• Chemotherapy or radiation treatments
• Smoking
• Autoimmune conditions, for example those affecting the thyroid or adrenal glands; in many women, however, no clear cause is found.

What complications can result from premature ovarian insufficiency?

The main issue is the loss of the female hormone (estrogen) normally secreted by the ovary, which can lead to:

• Lack of sexual desire
• Vaginal dryness
• Urinary incontinence
• Recurrent female infections
• Hot flashes
• Osteoporosis
• High blood lipids
• Increased risk of cardiovascular disease

Can premature ovarian insufficiency be prevented?

This depends on the underlying cause:

• If it is due to genetic or chromosomal factors, it generally cannot be prevented.
• If it is related to surgical procedures, doctors try, as much as possible, to preserve part of the ovarian cortex during ovarian surgery.
• In cases requiring chemotherapy or radiation therapy, it may be possible to freeze part of the ovarian cortex and re-implant it after treatment ends. Egg freezing may also be considered to help preserve reproductive potential.
• Stopping smoking and shisha use can also help protect ovarian health.

How is early ovarian insufficiency treated?

Treatment depends on the underlying cause, the woman’s reproductive goals, and the symptoms she is experiencing:

• Hormone replacement therapy (hormonal medication containing estrogen, with progesterone if the uterus is present) to help prevent complications caused by hormone deficiency; it is recommended to continue it at least until the natural age of menopause (around 50–51 years)
• Freezing eggs or ovarian tissue in certain cases to help preserve reproductive potential
• In some countries, egg donation may be an option for women wishing to conceive [* Ovarian plasma (PRP) therapy — this is still experimental; current guidelines recommend offering it only within clinical research, as there is not yet enough evidence that it increases the chance of pregnancy
• Stem cell technology, which remains under research and has not yet been proven effective in humans

If you have concerns about your ovarian health or fertility, speaking with a specialist can help you understand your options and next steps. Dr. Najeeb Layyous and his team are available to guide you through evaluation and personalized care.

Dr Najeeb Layyous F.R.C.O.G

Consultant Obstetrician, Gynecologist and Infertility Specialist