In recent years, affected by multiple factors such as changes in social attitudes, women's career development needs and the liberalization of the three-child policy, the elderly medical treatment group in Reproductive Medicine Centers has continued to expand. Clinical data show that the "watershed" of female fertility appears at the age of 35, drops sharply to about 10% after the age of 40, and only 5%-8% over the age of 43. The root cause of this disparity lies in the four major fertility dilemmas faced by older women. Only by recognizing these challenges can we plan our fertility path more rationally.
A woman's egg reserve is "inherently quantitative" and there is no possibility of acquired regeneration. After the age of 35, ovarian function enters an accelerated period of decline, and the number of eggs decreases in a "cliff-like" manner.
“”,,35,“”.By the age of 40, the number of basal antral follicles in the ovary is often less than 5, and the proportion of high-quality eggs is less than 10%. In modern society, bad living habits such as staying up late for a long time, mental stress, and irregular eating further aggravate the premature decline of ovarian function. Some women even experience insufficient egg reserves when they are around the age of 30.
:,,,“”,.More importantly, the rate of chromosomal abnormalities in elderly eggs is extremely high. The probability of chromosomal abnormalities in eggs in women over 40 years old exceeds 60%, and over 45 years old is as high as 80%. This will directly lead to failed embryo implantation, repeated miscarriages, and even increase the risk of fetal malformation.
If high-quality embryos are "good seeds" and the endometrium is the "breeding soil". The endometrium of older women often loses its "fertility" when it was young, making it difficult for the embryo to "take root."
If high-quality embryos can be considered as “good seeds”, then the endometrium can be seen as the “soil in which these seeds are grown”. In older women, the endometrium often loses its fertility that it had in younger years, making it difficult for the embryos to take root properly.
,,,,,,,.At the same time, underlying diseases such as hypertension, hyperlipidemia, and diabetes that are often accompanied by older women will change the blood supply to the uterine environment, and will also limit the choice of ovulation promotion drugs and transplant options, further reducing the success rate of test tubes. Clinical data shows that even if high-quality embryos are obtained, they are much lower than more than 50% of women under the age of 35.
The National Health Commission's "Guidelines for Pregnancy Risk Assessment and Management" clearly lists "pregnancy over 35 years old" as a yellow high-risk factor and "pregnancy over 40 years old" as an orange high-risk factor, which means that older pregnancy itself belongs to the category of high risk, and the risk of adverse maternal and infant outcomes will continue to increase with age.
The National Health Commission’s identifies pregnancies occurring in women over 35 years old as a high-risk factor, while pregnancies in women over 40 years old are classified as an orange-high-risk factor. This means that pregnancies at older ages are inherently high-risk, and the risk of adverse outcomes for both mother and child increases with age.
35,3,2.5,,,,.For elderly women who are inherently accompanied by underlying diseases such as uterine fibroids, ovulation disorders, and chronic anemia, the risks during pregnancy will be further superimposed-anemia that is not corrected before pregnancy will significantly increase the risk of postpartum hemorrhage and fetal development delay, and in severe cases, even endanger the life of mother and child.
During the process of assisted pregnancy at an advanced age, psychological pressure is often more difficult to bear than physical pain.
,.From preliminary examination, ovulation induction, egg retrieval, to embryo transfer, and waiting for pregnancy tests, every link is full of uncertainty, and repeated failed attempts will cause negative emotions such as anxiety, depression, and self-doubt to accumulate. The expectations of family members and the concerns of relatives and friends may become invisible pressure shackles in the context of repeated failures, causing elderly women to fall into a vicious cycle of "the more anxious they are, the more difficult it is to succeed."
The impact of psychological stress on fertility is not a matter of “subjective perception” at all. There are clear physiological mechanisms at play: prolonged high levels of stress can lead to endocrine disorders, increased cortisol levels, and consequently, changes in the local blood flow to the uterus and ovaries. Additionally, excessive nervous tension can cause abnormal contractions of the uterine and fallopian tube muscles, thereby interfering with embryo implantation. This ultimately becomes a “hidden obstacle” that can affect the success of in vitro fertilization attempts.
Regarding fertility planning for older women, reproductive experts recommend the following steps: Women of advanced age who wish to have children should undergo a comprehensive pre-pregnancy assessment 3-6 months in advance. This assessment should include tests related to ovarian function (such as AMH testing and count of antral follicles), uterine health, and screening for underlying medical conditions (blood sugar, blood pressure, liver and kidney function, anemia screening, etc.). Additionally, it is important to address unhealthy lifestyle habits, quit smoking and drinking alcohol, maintain a regular schedule, engage in moderate exercise, and consider taking folic acid and other nutrients when necessary.
,“”,,.For women over the age of 45, due to extremely poor egg quality and high pregnancy risk, most reproductive experts do not recommend trying to have children again. If they have a strong intention, they also need to conduct a comprehensive physical assessment to fully understand and accept the adverse outcomes of mother and child. high risk.