Fertility Preservation

Fertility preservation offers individuals the opportunity to safeguard their ability to have biological children in the future. Advances in reproductive medicine have made it possible to store eggs or ovarian tissue, and in certain situations to protect ovarian function during medical treatments, ensuring that fertility is not lost to time, illness, or necessary therapies such as chemotherapy.

This area of care is particularly important for women who wish to delay childbearing, those facing medical conditions or treatments that may compromise fertility, and younger patients who may not yet be ready to start a family but want the reassurance of future options. By planning ahead, fertility preservation provides not only medical security but also peace of mind, empowering patients to make reproductive choices on their own terms.

At our clinic, we provide multiple fertility preservation methods, including egg freezing, ovarian tissue cryopreservation, and the use of GnRH agonists. Each approach is tailored to the individual’s age, health, and circumstances, with the goal of offering safe, reliable, and effective solutions for protecting fertility.

What is fertility preservation and who should consider it?

Fertility preservation refers to a range of medical techniques designed to protect and store reproductive potential for future use. The most common methods involve freezing eggs or ovarian tissue, or using medications to safeguard ovarian function during medical treatments. These options have become increasingly important as more women choose to delay motherhood, and as advances in cancer care and other therapies improve long-term survival but may carry risks to fertility.

Fertility preservation may be considered in several situations:

• Women undergoing cancer treatment — chemotherapy and radiotherapy can damage the ovaries, leading to reduced or lost fertility. Preserving eggs or tissue before treatment offers the possibility of future pregnancy.

• Women delaying motherhood — age is one of the most significant factors affecting fertility, with egg quality and quantity declining over time. Egg freezing provides an opportunity to store younger, healthier eggs for future use.

• Patients with medical conditions — women with conditions such as endometriosis, autoimmune diseases, or those requiring surgery on the ovaries may benefit from preserving fertility in advance.

• Young patients at risk of early menopause — some women face premature ovarian insufficiency due to genetic or medical factors and may wish to secure future fertility options early.

By identifying those who are most likely to benefit, fertility preservation ensures that reproductive choices remain open, even in the face of medical challenges or changing life circumstances.

Why is fertility preservation important?

Fertility declines naturally with age and can also be affected by medical treatments or certain health conditions. Preserving eggs or ovarian tissue at the right time allows women to safeguard their ability to have biological children in the future. Beyond medical reasons, it also provides reassurance and flexibility in family planning.

Fertility preservation is important because it can:

• Protect against age-related fertility decline — egg quality and quantity decrease significantly after the mid-30s.

• Safeguard fertility before cancer treatment — chemotherapy and radiotherapy can damage the ovaries permanently.

• Support women with medical conditions — conditions like endometriosis or autoimmune disease may affect reproductive health.

• Offer security for those at risk of early menopause — premature ovarian insufficiency or genetic conditions can lead to early loss of fertility.

• Provide peace of mind — knowing that future options exist reduces anxiety and allows greater freedom in life planning.

What is egg freezing (oocyte cryopreservation)?

Egg freezing, also known as oocyte cryopreservation, is one of the most established methods of fertility preservation. It involves retrieving mature eggs from the ovaries, freezing them at very low temperatures, and storing them for future use. When a woman is ready to conceive, the eggs can be thawed, fertilised, and transferred as embryos.

Key aspects of egg freezing include:

• Ideal candidates — women who wish to delay childbearing, those undergoing cancer treatment, or patients with medical conditions that may affect fertility.

• Timing — success rates are highest when eggs are frozen before the age of 35, when egg quality and number are optimal.

• Procedure — involves controlled ovarian stimulation with hormones, followed by egg retrieval through a minor surgical procedure.

• Storage — eggs are frozen using vitrification, an advanced method that ensures high survival rates after thawing.

• Future use — when the woman is ready, eggs are thawed, fertilised with sperm, and implanted through in-vitro fertilisation (IVF).

Egg freezing provides women with the option to preserve their reproductive potential at a younger age, offering greater flexibility and reassurance for future family planning.

 

How does ovarian tissue cryopreservation work?

Ovarian tissue cryopreservation is an advanced fertility preservation technique that involves removing and freezing ovarian tissue for future use. Unlike egg freezing, it does not require ovarian stimulation, making it a suitable option for younger patients or those who need urgent medical treatment.

Key aspects of ovarian tissue cryopreservation include:

• Procedure — a small piece of ovarian tissue is surgically removed, usually through laparoscopy, and frozen for later transplantation.

• Candidates — often recommended for girls and young women who cannot undergo egg freezing, such as those requiring immediate chemotherapy or radiotherapy.

• Advantages — does not require hormonal stimulation, can be performed quickly, and preserves a large number of immature eggs within the tissue.

• Future use — when the patient is ready, the thawed tissue is transplanted back, allowing natural hormone production and the possibility of natural conception.

• Current status — still considered relatively new but has led to successful pregnancies worldwide, particularly in cancer survivors.

Ovarian tissue cryopreservation offers hope to patients who may not have other fertility preservation options, especially in urgent or pre-pubertal cases.

Can GnRH agonists protect fertility during cancer treatment?

Gonadotropin-releasing hormone (GnRH) agonists are medications sometimes used during chemotherapy to help protect ovarian function. They work by temporarily suppressing ovarian activity, reducing the impact of chemotherapy drugs on the eggs. Although not a replacement for egg or tissue freezing, they may provide additional protection in certain situations.

Key aspects of GnRH agonist use include:

• Mechanism — GnRH agonists place the ovaries in a temporary “resting” state, making them less vulnerable to damage during treatment.

• Candidates — typically offered to women undergoing chemotherapy who cannot delay treatment for egg freezing or ovarian tissue preservation.

• Advantages — simple to administer as an injection and can be started quickly before or during cancer therapy.

• Limitations — less reliable than egg freezing or tissue cryopreservation, with variable success rates depending on age and treatment type.

• Additional role — may also reduce heavy menstrual bleeding during chemotherapy, improving patient comfort and safety.

GnRH agonists are often used alongside other fertility preservation methods, providing an added layer of protection for women undergoing cancer treatment.

Comparing fertility preservation methods

Each fertility preservation method has unique benefits, limitations, and suitability depending on age, medical condition, and personal circumstances. The table below provides a comparison of egg freezing, ovarian tissue cryopreservation, and GnRH agonist use to help patients understand their options.

Method	Procedure	Best Candidates	Advantages	Limitations
Egg Freezing (Oocyte Cryopreservation)	Hormonal stimulation followed by retrieval of mature eggs, which are frozen for later use.	Women delaying motherhood, cancer patients able to postpone treatment, those with risk of declining fertility.	Established technique, high survival rates with vitrification, allows IVF when ready.	Requires time for stimulation (10–14 days), not suitable for urgent cases.
Ovarian Tissue Cryopreservation	Surgical removal of ovarian tissue, which is frozen and transplanted back when needed.	Young girls, women needing urgent cancer treatment, or those unable to undergo stimulation.	Does not require ovarian stimulation, preserves many immature eggs, and can restore natural hormone function.	Still relatively new, limited availability, requires surgery, outcomes less predictable than egg freezing.
GnRH Agonists	Injections to temporarily suppress ovarian activity during chemotherapy.	Women undergoing chemotherapy who cannot delay treatment or combine with other methods.	Simple, quick to start, reduces menstrual bleeding during therapy, may offer ovarian protection.	Less effective than egg or tissue freezing, success rates vary by age and treatment type.

Choosing the right method of fertility preservation depends on several factors, including age, diagnosis, urgency of treatment, and personal preferences. 

At our clinic, we carefully assess each patient’s individual circumstances before recommending the most appropriate approach. Whether through egg freezing, ovarian tissue cryopreservation, or the use of GnRH agonists, our goal is to provide safe and effective solutions to protect future fertility.

What are the success rates of fertility preservation methods?

The effectiveness of fertility preservation varies depending on the method used, the woman’s age, and her overall health. While no approach can guarantee future pregnancy, many women have successfully conceived using preserved eggs or tissue.

Success rates of different methods include:

• Egg freezing — highest success when eggs are frozen before age 35, with vitrification allowing survival rates of over 90% after thawing. Live birth rates depend on the number and quality of eggs frozen.

• Ovarian tissue cryopreservation — still considered relatively new, but more than 200 live births worldwide have been reported, especially in women treated for cancer. Outcomes continue to improve as techniques advance.

• GnRH agonists — less reliable compared to egg or tissue preservation. They may reduce the risk of ovarian damage during chemotherapy but cannot guarantee fertility preservation on their own.

Overall, combining medical expertise with the right timing offers the best chance of achieving pregnancy in the future.

What are the risks and considerations of fertility preservation?

Fertility preservation is generally safe, but as with all medical procedures, there are certain risks and practical factors that patients should be aware of. Understanding these helps ensure informed decision-making and realistic expectations.

Key risks and considerations include:

• Egg freezing — requires hormonal stimulation, which may cause temporary side effects such as bloating, mood changes, or ovarian hyperstimulation syndrome (OHSS) in rare cases.

• Ovarian tissue cryopreservation — involves surgery, which carries small risks such as infection or bleeding, and outcomes are less predictable compared to egg freezing.

• GnRH agonists — may cause menopausal-like symptoms such as hot flushes or mood swings during use, and their fertility protection is not guaranteed.

• Cost considerations — fertility preservation can be expensive, especially for egg freezing and tissue cryopreservation, and patients should plan for both the initial procedure and future use.

• Emotional factors — while preservation provides hope and reassurance, it may also create anxiety about outcomes and future family planning.

Discussing these risks and considerations with a fertility specialist ensures that patients choose the method best suited to their medical needs and personal goals.

When should you see a fertility specialist?

Fertility preservation is most effective when decisions are made early, before fertility potential is significantly reduced by age or medical treatment. Consulting a specialist at the right time allows you to fully understand your options, assess your reproductive health, and make proactive choices.

A fertility consultation is particularly valuable if you:

• Are preparing for medical treatment — procedures like chemotherapy, radiotherapy, or ovarian surgery can affect reproductive potential, and preservation should ideally be completed beforehand.

• Are considering delaying parenthood — women who wish to postpone childbearing can discuss egg freezing at an age when egg quality and reserve are still optimal.

• Have concerns about fertility health — conditions such as endometriosis, autoimmune disorders, or a family history of early menopause may warrant early preservation.

• Want clarity about future options — if conception has been difficult or you are unsure about your fertility status, a consultation provides personalised guidance and possible next steps.

Speaking with a fertility specialist early helps ensure that the most effective preservation strategies remain available, giving you greater confidence and flexibility for the future.

Summary

Fertility preservation provides women with the opportunity to protect their reproductive potential and make informed choices about family planning. With options such as egg freezing, ovarian tissue cryopreservation, and the use of GnRH agonists, modern medicine offers reliable ways to safeguard fertility against age, illness, or the effects of treatment. Each method has its own benefits and risks, and the best approach depends on individual circumstances such as age, health, and personal goals.

Whether you are preparing for medical treatment, managing a health condition, or planning to delay motherhood, fertility preservation can provide peace of mind and keep your options open for the future. If you are considering fertility preservation, schedule a consultation with Holistic Gynaecology & Fertility for personalised advice, expert guidance, and treatment options tailored to your needs.