When Is the Right Time to Freeze Your Eggs in the U.S., Mexico, and Japan?

As work becomes more demanding and the age of marriage and childbearing continues to rise, more and more women are reconsidering the timing of their fertility plans. Some do not have plans to have children yet, some want to complete their education and career first, and others have not yet met the right partner. The issue is that life plans can wait, but ovarian function and egg quality change with age. Therefore, egg freezing has gradually become a technology that some women consider in advance as part of their fertility planning.

Why Is Egg Quality Related to Age?

Women are born with a certain number of oocytes. As they age, ovarian reserve gradually declines, and egg quality also changes. Increasing age may not only affect the chances of conception but is also associated with an increased risk of chromosomal abnormalities in embryos.

In the past, the term “prime reproductive age” was often used to describe the period when female fertility was relatively strong. Modern reproductive medicine, however, places greater emphasis on actual ovarian reserve, age, and individual health conditions. For women who do not currently have plans for pregnancy, rather than simply drawing a line at a certain age, it is better to assess their fertility through ovarian function testing and then consider whether egg freezing is appropriate.

Egg freezing does not permanently preserve a younger state. Instead, mature oocytes obtained during egg retrieval are frozen and stored, giving them an opportunity to be thawed and used in the future.

Vitrification is commonly used in clinical practice today. After an ovarian function assessment, ovarian stimulation is used to allow multiple follicles to develop simultaneously. Ultrasound is then used to monitor follicular changes, and egg retrieval is performed at the appropriate time. The mature eggs obtained are processed and then placed into long-term cryogenic storage.

When there is a future need for pregnancy, the eggs can be thawed and are typically fertilized through intracytoplasmic sperm injection, followed by continued embryo culture. Embryo genetic testing can also be incorporated at a later stage to provide additional information for embryo selection.

What Steps Are Involved from Egg Freezing to IVF-PGT?

If frozen eggs need to be used in the future, the process generally involves thawing, fertilization, and embryo culture. Once embryos develop to the blastocyst stage, PGT testing can be performed to analyze chromosomal and related genetic information.

For those planning IVF-PGT, this is an important technological step to understand. Egg freezing addresses the preservation of eggs, while subsequent fertilization, embryo culture, and PGT determine how these eggs can eventually enter a complete assisted reproductive process.

The team founded by Dr. Nathan Zhang has been engaged in overseas assisted reproductive consulting services for more than ten years, providing services including egg freezing in the United States, IVF in the United States, and third-party assisted reproduction for those in need. With nearly 20 years of experience in the field of overseas assisted reproduction, IVF USA has responded to the diverse and personalized needs of people seeking reproductive care by entering the Mexican market at an early stage and becoming the Chinese representative of Power Fertility Center, Mexico POWER Reproductive Center (POWER IVF). Dr. Nathan Zhang’s business has now expanded beyond the United States to include IVF and egg freezing in Mexico, IVF and egg freezing in Japan and Thailand, as well as services in Taiwan and Hong Kong. Let’s prepare for the future together. Let’s welcome a beautiful future together!