Menstrual flow reduction reveals the truth of fertility decline after 35: Is egg freezing in the U.S., Mexico, and Japan the best option?

2026-10-09 15:59:35，浏览量： 10次

Menstruation is an important indicator of female health. The regular and punctual menstrual cycle every month is often affectionately referred to by women as "Aunt Flo." During menstruation, many women experience discomfort, such as fatigue, abdominal pain, and emotional fluctuations. At this time, special attention to rest and self-care is needed. The regularity and amount of menstruation usually reflect the health condition of a woman’s body. However, if you notice a sudden reduction in menstrual flow, does it indicate a warning of ovarian insufficiency?

 

Changes in menstrual flow, especially a decrease, indeed cause many women to worry. Generally speaking, the menstrual cycle occurs once a month, and the length of the cycle and the amount of menstrual flow vary from person to person. A normal menstrual cycle is usually between 21 to 35 days, and the menstrual flow is typically between 20 to 100 milliliters. Many factors, such as emotional stress and lifestyle, may affect the regularity and amount of menstruation.

 

So, when menstrual flow suddenly decreases, does it mean ovarian function decline or premature ovarian failure? The answer is not simple. Although the amount of menstruation is considered a marker of female fertility, a reduction in menstrual flow does not necessarily equate to premature ovarian failure. Premature ovarian insufficiency (POI) refers to the decline in ovarian function before the age of 40, leading to irregular menstruation, reduced libido, infertility, and other symptoms. This condition is usually accompanied by a significant drop in estrogen levels, an increase in gonadotropins, and a significant reduction in the number of oocytes in the ovaries.

 

Although changes in menstrual flow may be related to ovarian health, whether there is premature ovarian failure needs to be confirmed through specialized medical examinations. Dr. Zhang Xin emphasizes that AMH (anti-Müllerian hormone) levels are an important indicator for assessing ovarian reserve, as they reflect the functional status of the ovaries. AMH levels are not affected by the menstrual cycle or hormonal medications, so they can be tested at any stage of the menstrual cycle. If a woman is considering egg freezing or IVF, AMH testing is very important as it helps assess ovarian reserve and provides scientific basis for future fertility planning.

 

For many women, egg freezing is an effective way to preserve future fertility. Especially for women who are career-focused and plan to delay childbirth, egg freezing can provide assurance for future fertility plans. Dr. Zhang Xin suggests that the ideal time for egg freezing is before the age of 35, as the quality and quantity of eggs in the ovaries are relatively better at this age.

 

Additionally, for older women, aside from egg freezing, embryo freezing is also a method worth considering. Freezing embryos ensures that even if a woman chooses to become pregnant later in life, she can still obtain healthy embryos without worrying about insufficient ovarian reserve. For married women who do not plan to get pregnant immediately, freezing embryos as early as possible is also a wise choice. It can effectively preserve fertility and ensure more options in the future.

 

Dr. Nathan Zhang (Dr.Nathan zhang) established the IVF USA team, which has been engaged in overseas assisted reproduction consulting services for more than ten years, providing US egg freezing, US IVF, and third-party assisted reproduction services for people in need. IVF USA, which has been deeply engaged in the overseas assisted reproduction field for nearly 20 years, based on the diversification and personalization of reproductive needs, laid out the Mexican market early and became the agent in China for Power Fertility Center Mexico POWER Reproductive Center (POWER IVF). Currently Dr. Nathan Zhang’s business has expanded to Mexico IVF and egg freezing outside the US, Japan and Thailand IVF and egg freezing, as well as Taiwan, Hong Kong and other regions,  We work closely with IVF doctors worldwide to help you achieve your future fertility dreams.