Egg Freezing and Fertility Preservation: The Best Age, Procedure, Success Rates, and the Real Role of AMH

Introduction

Female fertility does not remain constant forever. The number of eggs is determined before birth and gradually decreases over time. In addition to the decline in egg quantity, the likelihood of chromosomal abnormalities in eggs also increases with age.

Egg freezing is a fertility preservation method that allows a woman to collect and store her eggs at her current age for possible use in the future. This method may be valuable for individuals who are facing treatments that could damage fertility or who plan to postpone having children.

However, egg freezing is not a guaranteed insurance policy for becoming a mother. Its outcome depends on factors such as age at the time of egg retrieval, the number and maturity of the eggs collected, laboratory quality, the individual’s future health, and several other factors. An informed decision is only possible when a person understands both the benefits and the limitations of the procedure.

What Is Egg Freezing?

Egg freezing, also known as oocyte cryopreservation, involves stimulating the ovaries with medication so that several follicles grow during one menstrual cycle instead of only one follicle. The eggs are then removed from the ovaries through a medical procedure, and the mature eggs are preserved using a rapid freezing technique known as vitrification.

In the future, the eggs are thawed. Intracytoplasmic sperm injection, or ICSI, is usually used to fertilize a thawed egg. In this procedure, a single sperm is injected directly into the egg. The resulting embryos are grown in the laboratory for several days, after which a suitable embryo is transferred into the uterus.

Not every retrieved egg is necessarily mature. Similarly, not every mature egg will successfully survive freezing and thawing, become fertilized, and develop into an embryo.

What Does Fertility Preservation Mean?

Fertility preservation refers to a group of methods used to maintain the possibility of having children in the future. These methods may include:

• Egg freezing
• Sperm freezing
• Embryo freezing
• Ovarian tissue freezing
• Testicular tissue freezing in research settings or highly specialized circumstances
• Repositioning the ovaries before certain types of radiotherapy
• Selected protective methods during cancer treatment

The most appropriate method depends on the individual’s age, sex, marital status, type of illness, the amount of time available before treatment, local laws, and personal preferences.

Who May Consider Egg Freezing?

1. People Facing Cancer Treatment

Chemotherapy, pelvic radiotherapy, and certain surgical procedures may damage the ovaries. Fertility preservation should therefore be discussed as soon as possible before treatment begins.

Rapid referral is very important because some fertility preservation methods may require approximately two weeks. With newer protocols, ovarian stimulation often does not need to be delayed until the beginning of the next menstrual period.

Saving the person’s life and treating the underlying disease remain the main priorities. Any fertility preservation plan should be coordinated between the oncology specialist and the reproductive medicine specialist.

2. People Undergoing Ovarian Surgery

Individuals who are scheduled for surgery because of an endometrioma, ovarian mass, or another ovarian condition may be concerned about the effect of surgery on ovarian reserve.

Egg freezing is not necessary before every ovarian operation. The decision depends on age, the type and size of the lesion, ovarian reserve, previous surgical history, and the possibility that both ovaries could be affected.

3. People With Genetic or Autoimmune Conditions

Some diseases, or their treatments, may lead to an early decline in ovarian function. In these situations, early fertility counselling may provide the individual with a wider range of options.

4. Postponing Parenthood

Some women may not currently feel emotionally, socially, professionally, or personally ready for pregnancy and may wish to preserve the possibility of using their younger eggs in the future.

This is a personal decision and should not be influenced by social pressure. The individual should understand that egg freezing may improve future opportunities, but it does not completely eliminate the age-related limitations of fertility.

5. People Without a Suitable Partner

A woman may not currently have the partner with whom she wishes to have a child and may not want to make a long-term decision under pressure from her biological timeline.

Unlike embryo freezing, egg freezing does not require sperm to be selected at the time of freezing.

What Is the Best Age for Egg Freezing?

From a biological perspective, the younger a woman is when her eggs are retrieved, the more likely those eggs are to have a normal chromosomal structure. However, freezing eggs very early may mean that the individual never uses them and pays storage fees for many years.

There is no single fixed age that is best for everyone. A balance should be made between egg quality at the current age, the likelihood that pregnancy will be postponed, cost, ovarian reserve, and the probability of using the eggs in the future.

In general, seeking counselling in the early to mid-thirties may provide a more realistic opportunity for decision-making. Egg freezing can also be performed after the age of 35, but the likelihood of needing a larger number of eggs or more than one stimulation cycle increases.

At older ages, particularly after the age of 40, the significant reduction in the likelihood of obtaining a healthy embryo and achieving a live birth should be discussed transparently. The fact that a procedure can technically be performed does not necessarily mean that it is appropriate or likely to be effective for every person.

Does AMH Determine Whether Someone Should Freeze Their Eggs?

Anti-Müllerian hormone, or AMH, is secreted by small follicles in the ovaries. Along with an antral follicle count performed by ultrasound, an AMH test can help a doctor estimate how the ovaries may respond to stimulation medication.

AMH mainly provides information about the possible number of eggs that may be retrieved. It does not directly determine the genetic quality of those eggs.

Important points about AMH include:

• A low AMH level does not mean that the chance of natural pregnancy is zero.
• A normal AMH level does not guarantee that a person will not experience fertility problems in the future.
• A high AMH level does not mean that egg quality is high.
• Hormonal contraceptives, differences between laboratories, and certain medical conditions can affect the result.
• Age remains the most important indirect indicator of the chromosomal quality of eggs.

A major decision such as egg freezing should not be based on a single AMH result.

How Many Eggs Should Be Frozen?

There is no single number of eggs that can guarantee the birth of a baby. The number needed depends on age at the time of retrieval, the quality of the fertility centre, egg survival after thawing, fertilization rates, embryo development, and the number of children the person hopes to have.

A reduction in numbers occurs at every stage:

1. Not every follicle contains an egg.
2. Not every retrieved egg is mature.
3. Not every mature egg survives thawing.
4. Not every egg becomes fertilized.
5. Not every embryo develops to a suitable stage.
6. Not every transferred embryo implants in the uterus.
7. Not every pregnancy results in a live birth.

Therefore, instead of promising that a specific number will be enough, a fertility centre should explain the individual probability of success based on the person’s age and the laboratory’s actual results.

More than one stimulation cycle may be needed to collect an appropriate number of mature eggs.

The Stages of Egg Freezing

Stage One: Consultation and Evaluation

The doctor will ask about menstrual history, medical conditions, previous surgeries, medications, family history of early menopause, and future fertility plans.

The assessment may include:

• AMH testing
• Ultrasound and antral follicle count
• Infectious disease screening
• Complete blood count
• Hormonal tests based on individual circumstances
• Anaesthesia assessment when required

Stage Two: Ovarian Stimulation

The individual usually receives injectable medications for approximately 8 to 14 days. The goal is to encourage several follicles to grow at the same time.

During this period, ultrasound examinations and sometimes blood tests are performed to adjust the medication dose and determine the appropriate timing of egg retrieval.

Stage Three: The Trigger Injection

When the follicles reach an appropriate size, a final medication is administered to complete egg maturation.

The timing of this injection is extremely important and should be followed exactly according to the fertility centre’s instructions.

Stage Four: Egg Retrieval

Egg retrieval is generally performed under vaginal ultrasound guidance and with sedation or short-term anaesthesia. The doctor uses a special needle to collect fluid from the ovarian follicles.

The individual is usually discharged on the same day. Bloating, mild pain, light spotting, or tiredness may continue for several days.

Stage Five: Assessment and Freezing

An embryologist examines the retrieved eggs. Only suitable mature eggs are frozen.

The number of follicles seen on ultrasound does not necessarily equal the number of mature eggs that will be available for freezing.

Possible Risks and Side Effects

Medication-Related Side Effects

Bloating, abdominal tenderness, mood changes, headaches, fatigue, and reactions at the injection site may occur.

Ovarian Hyperstimulation Syndrome

Ovarian hyperstimulation syndrome, or OHSS, occurs when the ovaries respond excessively to stimulation medication.

Modern protocols have reduced the risk of severe OHSS for many patients, but the risk has not been completely eliminated.

Severe pain, rapid weight gain, reduced urine output, persistent vomiting, major abdominal swelling, or shortness of breath require immediate contact with the fertility centre.

Egg Retrieval Complications

Bleeding, infection, or injury to surrounding organs is rare but may occur. The risks associated with sedation or anaesthesia should also be explained.

Emotional Pressure

Waiting to learn the number of follicles and retrieved eggs can be stressful. The result at each stage may be lower than the individual expected.

Psychological support and transparent explanations from the beginning are therefore important.

The Difference Between Egg Freezing and Embryo Freezing

With egg freezing, fertilization has not yet occurred, and the decision about sperm is postponed until the future. This may provide the individual with greater reproductive independence.

With embryo freezing, eggs are fertilized with sperm before freezing. This provides more information about fertilization and embryo development.

However, personal and legal decisions regarding the future use of embryos may be more complicated.

The laws governing the storage and use of eggs and embryos differ between countries. In the United Arab Emirates, current regulations, marital status requirements, the type of fertility centre, consent documents, and storage conditions should be confirmed directly with a licensed centre.

Does Egg Freezing Cause Early Menopause?

During a natural menstrual cycle, a group of follicles begins to grow, but usually only one reaches ovulation. The remaining follicles naturally stop developing.

Ovarian stimulation medication supports some of this group of follicles so that more of them can reach maturity.

Egg freezing does not usually cause a sudden depletion of ovarian reserve or early menopause. However, age itself, an underlying medical condition, or ovarian surgery may affect ovarian reserve.

Does Egg Freezing Affect Natural Pregnancy?

For most individuals, once the treatment cycle is completed and the ovaries return to their usual condition, it is still possible to try to conceive naturally.

Frozen eggs are stored for possible future use, and there is no obligation to use them.

If the person later becomes pregnant naturally, the stored eggs may never be needed.

Is the Age of the Egg More Important, or the Age of the Mother During Pregnancy?

The risk of chromosomal abnormalities in an embryo is more closely related to the age of the egg at the time it was retrieved.

However, the health of a pregnancy does not depend only on the egg.

A higher maternal age at the time of pregnancy may increase the risk of gestational hypertension, gestational diabetes, premature birth, and certain other pregnancy complications.

Egg freezing does not stop the body from ageing and does not eliminate the obstetric risks associated with pregnancy at an older age.

Before stored eggs are used, the individual’s general health should be assessed.

Fertility Preservation in the United Arab Emirates

Health authorities in the United Arab Emirates establish specific requirements for fertility centres regarding professional licensing, laboratory quality, informed consent, record keeping, confidentiality, and counselling.

UAE policies distinguish between legal or medical eligibility to receive a service and the conditions required for insurance coverage.

For example, age, AMH, or marital-status requirements stated in certain THIQA coverage policies are criteria for that specific financial coverage programme. They should not be interpreted as biological rules or universal criteria for determining whether egg freezing is appropriate for every woman.

Before treatment begins, it is advisable to ask the fertility centre:

• Are the centre and treating doctor properly licensed?
• What is the egg survival rate after thawing in this laboratory?
• How does the centre report live birth rates according to age at egg retrieval?
• What are the costs of medication, egg retrieval, freezing, and annual storage?
• What happens if the person relocates to another country?
• How long can the eggs remain in storage?
• What happens to the stored material if the individual dies or loses decision-making capacity?
• Are the costs of thawing, ICSI, embryo culture, and embryo transfer charged separately?
• Who should be contacted in an emergency?

How Can Someone Prepare for an Egg-Freezing Cycle?

There is no diet or supplement that can dramatically increase the number of eggs within a short period.

More helpful measures include:

• Stopping cigarette smoking and shisha use
• Avoiding recreational drugs and alcohol
• Getting enough sleep
• Engaging in moderate physical activity
• Managing underlying medical conditions
• Informing the doctor about all medications and supplements
• Taking folic acid when pregnancy is possible or when advised by a doctor
• Planning time off for the day of egg retrieval
• Arranging for someone to accompany the person after sedation
• Avoiding unverified supplements that claim to rejuvenate the ovaries

Conclusion

Egg freezing is an important tool for preserving part of a person’s future reproductive potential, but it does not guarantee motherhood.

The value of the procedure depends on making the decision at an appropriate time, maintaining realistic expectations, choosing a high-quality centre, and storing a suitable number of mature eggs.

AMH can help estimate how the ovaries may respond to stimulation, but it does not determine egg quality or provide a definite prediction of pregnancy.

Age at egg retrieval remains one of the most important factors affecting future outcomes.

People who are facing chemotherapy, radiotherapy, ovarian surgery, or a disease that may threaten ovarian reserve should receive fertility preservation counselling as quickly as possible before treatment begins.

Those who are postponing pregnancy for personal reasons should also receive transparent and individualised information before fertility declines further.

This article is not a substitute for medical advice. The most appropriate method should be selected after considering age, ovarian reserve, medical history, the laws of the country where treatment will take place, costs, and future family-building goals.