1. Why is age the "number one natural enemy" of successful IVF?

Cliff-like decline in egg quantity and quality

After 35 years old: Ovarian reserves decline rapidly, and the rate of chromosome abnormalities in eggs increases sharply, leading to the decline of embryos.

Even if PGT (Preimplantation Genetic Testing) is used to screen for normal embryos, the chances of pregnancy are still slim.
The physiological mechanism is irreversible The number of female follicles is fixed at birth, with only one dominant follicle developing per cycle, and the rest naturally atresia.

Although ovulation promotion technology can "wake up" atretic follicles, it cannot reverse egg aging. The 2016 journal Human Reproduction confirmed that excessive ovulation may damage the ovaries, but standardized treatment does not increase the risk of ovarian cancer.

2. Frozen embryos: the "regret medicine" to fight the fertility clock

(1) Technical advantages Avoiding the risk of advanced age: cryopreservation of high-quality embryos aged 25 to 30

(2) Appropriate operation timing People
suggested Success Rate Guarantee Measures
Unmarried and unborn
Frozen eggs before the age of 30
Married couple with postponement Combined frozen embryos (fertilized eggs)
5-day blastocyst survival rate> 95%

patients with tumor Emergency cryopreservation of eggs/embryos before chemoradiotherapy

Preferred options for preserving fertility Key tips: Frozen embryo transfer requires strict synchronization of the endometrial cycle-- ·Day 3 embryos: 3 days after ovulation or day 4 of progesterone conversion in the artificial cycle

·Day 5 blastocyst: 5 days after ovulation or 6 days after progesterone conversion.

3. Age-based coping strategies: What should I do at what age?

1. <35 years old: golden window period

Natural preparation for pregnancy: 23 - 30 years old is the appropriate childbearing age
IVF indications: If you are not pregnant for 1 year and need timely check-up, the first choice is a personalized ovulation promotion plan (such as anti-caking regimen to reduce ovarian stimulation).
It is recommended to select PGT to screen embryos with chromosomal abnormalities
Frozen embryo transfer: Cumulative 2-3 cycles of embryo retransfer
3.>
3.> 40 years old: rational decision-making period
It is recommended to fully evaluate physical and financial endurance

Consider volunteer options: When the success rate of self-eggs is extremely low

4. Psychological and financial preparations: IVF is not a universal insurance
Psychological factors: Anxiety disrupts endocrine and indirectly reduces pregnancy rate. Couples need to synchronize psychological construction
Economic cost: The cost for a single cycle is about 30,000 - 100,000 yuan. It takes an average of 3 cycles for people over 40 to succeed
Legal restrictions: Mainland China only allows married couples to freeze their eggs, and single women need to go overseas to freeze their eggs.