How Many Eggs Are Needed for Successful US-Mexico IVF at an Advanced Maternal Age?

2026-06-24 16:58:50，浏览量： 1次

 

As childbearing age continues to rise, more women are entering the preconception stage after achieving career stability and establishing long-term family plans. At the same time, advanced maternal age has become one of the most discussed topics in the field of assisted reproduction.

 

Why Does Age Affect IVF Success Rates?

 

A woman is born with a fixed number of eggs, and ovarian reserve naturally declines with age. After age 35, egg quality begins to decrease more rapidly. After age 40, the rate of chromosomal abnormalities increases significantly, which is one of the main reasons for lower natural pregnancy rates and higher miscarriage risks.

 

For this reason, during a US-Mexico IVF cycle, doctors focus not only on the number of eggs retrieved but also on how many viable embryos can ultimately be created. In younger women, a portion of retrieved eggs may develop into healthy embryos. For women of advanced maternal age, however, even with the same number of eggs retrieved, the proportion that develops into high-quality embryos may be considerably lower.

 

This is why many families pursuing pregnancy at an advanced maternal age place greater emphasis on ovarian reserve evaluation and subsequent embryo screening.

 

How Many Eggs Do Older Women Need?

 

Many studies have found that for women over the age of 38, obtaining ideal embryos from a single egg retrieval cycle becomes increasingly challenging.

 

In clinical practice, some women over the age of 40 may need to accumulate eggs through multiple cycles to increase the chances of obtaining healthy embryos. As women age, the likelihood of chromosomal abnormalities in eggs rises, meaning that the number of embryos that ultimately pass screening and are suitable for transfer is often lower than expected.

 

Therefore, when undergoing US-Mexico IVF, doctors typically evaluate factors such as AMH levels, antral follicle count, and reproductive history rather than relying solely on the number of eggs retrieved in a single cycle.

 

For individuals with significantly diminished ovarian reserve, US-Mexico egg freezing has also become an option for proactively preserving fertility. Freezing eggs at a younger age may provide more possibilities for future family-building plans.

 

In recent years, as more families have explored US-Mexico IVF and US-Mexico egg freezing, many have adopted a more proactive approach to fertility planning. The IVF USA team founded by Dr. Nathan Zhang has been providing international fertility consultation services for more than a decade, offering US egg freezing, US IVF, and third-party reproduction services for those in need. With nearly 20 years of experience in the international fertility field, IVF USA recognized the growing diversity and personalization of reproductive needs and established an early presence in Mexico, becoming the China representative of Power Fertility Center (POWER IVF) in Mexico. Today, Dr. Nathan Zhang's services have expanded beyond the United States to include IVF and egg freezing programs in Mexico, Japan, Thailand, Taiwan, and Hong Kong. IVF USA and Dr. Nathan Zhang continue to focus on the fertility needs of families at different life stages and have witnessed more people finding the reproductive path that best suits them through informed and scientific planning.