Mexico Surrogacy Guide: POWER IVF Explains How Many Eggs a Woman Ovulates in a Lifetime

In recent years, more families have started planning parenthood earlier. Whether preparing for a natural pregnancy, assisted reproduction, or Mexico surrogacy, one common question continues to arise: does a woman have enough eggs for future pregnancy? Many people become anxious after seeing results such as "diminished ovarian reserve" or "low AMH," worrying that they may have already missed their best opportunity.

How Many Eggs Does a Woman Ovulate in Her Lifetime?

A woman's egg supply is essentially established before birth.

During fetal development, the ovaries contain approximately 6 to 7 million primordial follicles. By birth, this number decreases to about 1 to 2 million. By puberty, only around 300,000 to 500,000 follicles remain.

Many people assume all of these eggs will eventually be released, but that is not the case. Throughout a woman's reproductive years, only about 400 to 500 eggs are actually ovulated. The vast majority undergo natural atresia and degeneration at different stages and are never used.

Why Is There Usually Only One Dominant Follicle Each Month?

At the beginning of each menstrual cycle, a group of follicles begins developing together.

As hormone levels change, only one follicle—occasionally two—becomes the dominant follicle and proceeds to ovulation. The remaining follicles stop developing and are naturally absorbed by the body. This is why ovarian reserve continues to decline over time, even if a woman is not pregnant and even if ovulation does not occur in every cycle.

For this reason, female fertility is closely associated with age, not simply with whether a woman has previously given birth.

Why Does Age Affect Fertility?

As women get older, both the number and quality of eggs gradually decline.

After age 35, the likelihood of chromosomal abnormalities increases significantly, reducing the chance of producing high-quality embryos. Both natural conception rates and assisted reproduction success rates are affected.

For those planning pregnancy later in life or wishing to preserve future reproductive options, evaluating ovarian reserve and establishing a fertility plan early is far more valuable than focusing only on chronological age.

Egg Quality Remains Essential in Surrogacy

Some families assume that once they choose Mexico surrogacy, the intended mother's age no longer matters.

In reality, surrogacy addresses the pregnancy itself rather than egg quality. Even when a gestational carrier carries the pregnancy, healthy embryos still depend on healthy eggs.

Today, fertility laboratories typically culture embryos to the blastocyst stage before performing IVF-PGT, allowing embryologists to identify embryos with stronger developmental potential. This approach improves overall pregnancy efficiency while reducing the risk of miscarriage associated with chromosomal abnormalities. For families preparing for surrogacy, high-quality embryos remain one of the most important foundations for successful treatment.

As assisted reproductive technology continues to advance, more families are placing fertility planning on a longer timeline. Staying informed and receiving individualized medical evaluation can help people make more confident and rational decisions when the time comes.

Power Fertility Clinic is located in the heart of Mexico City, just 500 meters from the U.S. Embassy. Operated directly by a U.S. fertility organization, it is a fully licensed reproductive center that strictly follows FDA standards. POWER IVF provides comprehensive services including egg donation, sperm donation, and third-party reproduction, while integrating U.S. egg freezing and IVF-PGT (PGT-A) technology to meet the diverse needs of families planning pregnancy. The clinic features advanced laboratories and an experienced medical team to ensure accurate and efficient embryo screening. Mexican law allows IVF treatment and family balancing for all individuals and supports the importation of frozen sperm, eggs, and embryos. POWER IVF is fully licensed to receive reproductive samples from overseas, helping families move forward with confidence toward their fertility goals.