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When it comes to starting a family, many people may see it as something to wait on until everything is ready. However, in reality, a woman’s biological clock moves in the opposite direction of life stability. The main cause of infertility is increasing age, which clearly reduces both the quality and quantity of eggs. Therefore, staying informed and planning ahead by freezing eggs is important—something modern women should start paying attention to from today.
What is egg freezing?
Egg freezing is a medical process that helps “stop time” and preserve the quality of a woman’s eggs for future use. A doctor stimulates the ovaries and retrieves mature eggs outside the body, then uses ultra-low-temperature freezing technology to keep the eggs in a youthful state until the time pregnancy is desired.
Why is egg freezing good for women who want to plan for having children?
Women are born with a limited number of eggs, which naturally continues to decline over time. Planning to freeze eggs is therefore a proactive option with a variety of benefits for the future as follows:
- Stop egg aging: Stored eggs retain the quality and maturity corresponding to your age on the day they were frozen, and do not deteriorate according to the mother’s actual age later on.
- Reduce the risk of infertility: Helps increase the chance of a successful pregnancy in the future, even when the body reaches an older age.
- Reduce the risk of genetic disorders: Egg freezing helps reduce the rate of embryo chromosomal abnormalities.
- Preserve the chance of having children for patients: For patients who must undergo chemotherapy or radiation therapy, it is recommended to freeze eggs before starting treatment.
Who is egg freezing suitable for, and what age is best?
Egg freezing can be started by any woman of reproductive age, but its effectiveness and success largely depend on the age at which it is done.
- Recommended age range: Obstetricians and gynecologists recommend doing it between ages 28–35, because the ovaries function well during this period, the baseline egg count is higher, and eggs are of better quality.
- Women who marry later or are not ready to have children: Those focusing on their careers or who have not yet found a life partner but want to plan a backup for the future.
- Those with health issues or premature ovarian decline: Including those with a family history of early menopause or those found to have anti-Müllerian hormone (AMH) levels below the normal range.
Preparing before egg freezing for family planning
To obtain good-quality eggs and a sufficient number in a stimulation cycle, patients need to prepare their bodies carefully under a doctor’s guidance.
- Undergo in-depth screening: Blood tests to check ovarian hormone levels (AMH), screening for sexually transmitted infections, and an ultrasound to assess baseline follicles.
- Adjust lifestyle habits: Get enough sleep—at least 8 hours per night—and avoid accumulated stress.
- Avoid stimulants and addictive substances: Stop smoking and avoid all alcoholic beverages for at least 1–2 months before starting the process.
- Nourish the body with essential nutrients: Eat a balanced diet including all 5 food groups, emphasize high-quality protein, and supplement with vitamin D or folic acid as prescribed by the doctor.
Understanding the egg freezing process from start to vitrification
For those wondering what the egg freezing process looks like from start to finish, it typically combines medical care with the patient’s own cooperation. The steps are as follows:
- Egg stimulation injections: Begin on day 2 or 3 of the menstrual cycle. The doctor prescribes hormone medication for the patient to inject into the abdomen once daily for about 9–12 days to stimulate multiple eggs to mature simultaneously.
- Follow-up ultrasound monitoring: The doctor will schedule about 2–3 visits to monitor follicle growth and adjust the dosage according to ovarian response.
- Trigger injection for egg maturation: When follicles reach the target size, the doctor will administer an ovulation trigger injection, which must be given at the exact time—about 36 hours before the egg retrieval procedure.
- Egg retrieval procedure: Performed in an operating room under light anesthesia. The doctor uses a small needle inserted through the vagina to aspirate the eggs. The procedure takes about 20–30 minutes.
How to care for your body after egg freezing: what not to eat and how to take care of yourself
Self-care after the procedure is important for ovarian recovery and helps reduce the risk of possible complications. Recommended practices include:
- Self-care guidelines: Rest fully for 1–2 days; avoid heavy lifting and strenuous exercise; and avoid sexual intercourse for at least 1 week.
- Food restrictions: Avoid strongly flavored foods, fermented/pickled foods, raw or improperly cooked foods, and all alcoholic beverages to prevent inflammation.
- Watch for abnormal symptoms: Mild lower abdominal cramps or bloating similar to premenstrual symptoms can be normal. However, if you have a high fever, severe abdominal pain, or unusually heavy bleeding, seek medical attention immediately.
Does egg retrieval hurt? Which steps require extra caution?
Worrying about pain is normal, but today the entire process is designed to be as comfortable as possible. During stimulation injections, the needle is very small and short, so it is barely painful. On egg retrieval day, light anesthesia is given so the patient does not feel pain during the procedure. Steps requiring special caution include strictly following the hormone injection schedule and fasting (no food or water) before the egg retrieval day as instructed by the doctor.
How many years can frozen eggs be stored, and why use vitrification?
In theory, eggs can be stored for many decades or even for life without a time limit. However, obstetricians and gynecologists recommend that the most appropriate timeframe to use the eggs is within 5–10 years. This is because rapid freezing technology, or vitrification, at -196°C helps stop time and preserve egg quality long-term without ice crystals forming and damaging the internal cell structure. However, pregnancy success depends on the initial egg quality at the time of storage, and under Thai law, using eggs for fertilization and future embryo transfer can only be done once the couple is legally registered as married.
Consult about egg freezing with the Fertility Center, Bangkok Hospital
Whether you marry late or early, it is recommended to try to conceive through natural intercourse, averaging 2–3 times per week. If you are 35 or younger, it is recommended to try for the first year after marriage. If you are over 35, it is recommended to try naturally for no more than 6 months. If you are still not successful, you can consult a fertility specialist at the Fertility Center, Bangkok Hospital, for a detailed evaluation and a plan to achieve pregnancy as intended.
- Find a doctor: https://www.bangkokhospital.com/th/bangkok/doctor
- Make an appointment: https://www.bangkokhospital.com/th/bangkok/appointment/step1
- Contact us: https://www.bangkokhospital.com/th/bangkok/contact
Frequently Asked Questions (FAQ) about egg freezing
If you freeze eggs after age 35, what percentage chance is there of a successful pregnancy?
The chance of pregnancy decreases to about 20–30% per cycle because the rate of chromosomal abnormalities in eggs increases with age, so it may require multiple stimulation cycles to accumulate enough eggs.
If you want 1 child, how many frozen eggs should you collect in total?
Medically, it is recommended to collect about 15–20 mature eggs to increase the chance of fertilization, development into a healthy embryo, and successful pregnancy.
How many total days does the process take, starting from the first day of ovarian stimulation?
The entire process takes about 10–14 days, including 9–12 days of stimulation injections, and the egg retrieval procedure in the operating room, which takes only about 20–30 minutes.
What can the level of pain from self-administered stimulation injections at home be compared to?
Very mild, like an ant bite, because the hormone injection needle for the abdominal area is designed to be especially small and short, so most people can self-inject comfortably.
Under Thai law, what is the maximum age limit for women to use frozen eggs?
Under the Child Protection Act, artificial insemination or embryo transfer into the uterus is prohibited for women over 55 years of age, for the safety of both mother and baby.
