Fertility preservation
Fertility preservation covers methods such as storing eggs, embryos or ovarian tissue to protect the chance of a future pregnancy. One of the most important indications is when it comes up before a treatment that may affect fertility (e.g., chemotherapy/radiotherapy); it may also come up in some medical conditions, such as a diminished ovarian reserve. In Türkiye, the situations in which it can be performed are determined by the national assisted reproductive treatment (ART) regulations. Timing is critical: especially if cancer treatment is planned, the options should be assessed quickly, before treatment begins. Suitability is individual.
In some situations, even if a pregnancy is not possible "right now," it may be possible to protect the chance of a future pregnancy starting today. This is called fertility preservation. The most important and time-sensitive part of this topic is the planning done before a treatment that may affect fertility. What are the options, and why does timing matter so much?
What is fertility preservation?
Fertility preservation is the storage of reproductive cells or tissue to protect the chance of having a child in the future. Egg freezing and embryo freezing are what most often come to mind; in selected cases, storing ovarian tissue may also be considered. The aim is not to give a guarantee but to protect the chance.
Who is it considered for?
The main groups are:
- People for whom a treatment that may affect fertility is planned (e.g., some cancer treatments),
- Those found to have a diminished ovarian reserve,
- Medical conditions that increase the risk of fertility declining early, such as a family history of early menopause,
- Some gynecologic conditions that may affect fertility (e.g., before surgery for extensive endometriosis).
Preservation before cancer treatment
This is the most critical part of the topic. Some treatments, such as chemotherapy and radiotherapy, can affect ovarian function and fertility. That is why, in suitable patients, it is important to discuss fertility preservation options before treatment begins.
This decision is made by the oncology and reproductive health teams working together. The aim is to add a short preservation step, when appropriate, without unnecessarily delaying cancer treatment. For the general framework of gynecologic cancers, see gynecologic oncology.
What are the methods?
Freezing and storing the eggs collected after ovarian stimulation. In Türkiye, it is performed in the medical conditions defined in the regulations.
Fertilizing the collected eggs and storing them as embryos. Eligibility and the legal framework vary from person to person.
An option that may be considered in selected cases, particularly when urgent treatment is needed.
Which method is suitable is determined by age, medical condition, the time window and the legal framework (in Türkiye, the national assisted reproductive treatment regulations).
Why is timing critical?
Especially if cancer treatment is planned, there may be a window of time for fertility preservation before treatment begins. This window is sometimes short. That is why it is very important for the topic to come up at the diagnosis stage, before treatment starts.
Options may narrow as time passes, so raise the topic with your team early, without putting it off as "we'll think about it later."
When should it be discussed?
- If a treatment that may affect fertility (e.g., chemotherapy/radiotherapy) is planned: right away, before treatment,
- If a diminished reserve is found at a young age,
- If you have a risk factor such as a family history of early menopause,
- If extensive gynecologic surgery is planned and you hope to become pregnant.
Fertility preservation is an opportunity to keep open a door left for the future. Your doctor, together with the relevant teams, will assess whether it is suitable for you and what the timing should be.
Frequently asked questions
Who is fertility preservation suitable for?
Mainly, it may be considered for people for whom a treatment that may affect fertility is planned (e.g., some cancer treatments), those with a diminished ovarian reserve, and people with a medical risk such as a family history of early menopause. In Türkiye, the situations in which it can be performed are limited by the national assisted reproductive treatment (ART) regulations. Suitability is assessed individually according to age, reserve and medical condition.
Is it possible to freeze eggs before cancer treatment?
In many cases yes, but timing is critical. In some patients, there may be a short window of time to freeze eggs or embryos before starting cancer treatment. That is why it is important to discuss fertility options quickly with the oncology team as soon as the diagnosis is made.
Does egg freezing guarantee a future pregnancy?
No. Fertility preservation aims to improve the chance of a future pregnancy but does not guarantee it. The outcome depends on the number of eggs frozen, age and many other factors. Your doctor will share realistic expectations based on your own situation.
Is it better to freeze embryos or eggs?
This depends on the person's situation (e.g., marital status, medical and legal circumstances). In Türkiye, embryo freezing is possible only for married couples, using their own reproductive cells; egg freezing, on the other hand, is performed in the medical conditions defined in the regulations. Embryo freezing and egg freezing have different eligibility criteria. Your doctor will explain which one is suitable for you and the legal framework.
Does fertility preservation delay cancer treatment?
The aim is to add a short preservation step, when appropriate, without unnecessarily delaying cancer treatment. This decision is always made together with the oncology team, taking the urgency of treatment into account. Your priorities and the timing are determined by a joint decision between the teams.
Sources
- ESHRE — Fertility preservation guidelines
- ASRM — ReproductiveFacts (patient information)
- National Cancer Institute (NCI) — Fertility & cancer treatment
Note: This content was written independently, based on current scientific information published by the institutions above; it is not a direct copy of any text.
This article is for general information only; it is not a diagnosis or treatment recommendation and does not replace a medical examination. Please consult your doctor about your own situation. The content reflects scientific knowledge as of the update date above.