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For many women, "Aunt Flo" is a monthly visitor that arrives regularly after they enter puberty. In daily life, women often discuss the length of their menstrual cycles. Some may find that their cycles are shorter, sometimes less than 20 days. This raises concerns: could this lead to early menopause or even an early onset of perimenopause?
In fact, throughout a woman's life, approximately 300 to 400 follicles mature and are released, which constitutes only 0.1% of the total number of follicles a woman has in her lifetime. When an egg is released, if it does not encounter sperm, the woman will experience menstruation. If the menstrual cycle is too short, it may raise worries about early menopause.
Typically, a woman's menstrual cycle is about 28 days, primarily consisting of the follicular phase (when the follicle develops and ovulates) and the luteal phase (after ovulation). Generally, the length of the luteal phase is relatively fixed at about 14 days, while the duration of the follicular phase can vary from person to person. The main factor influencing the duration of the follicular phase is the level of follicle-stimulating hormone. If the hormone levels are high, it may cause the follicle to develop and ovulate earlier, resulting in a shorter menstrual cycle.
In addition, the length of the menstrual cycle is influenced by various factors, including diet, exercise, sleep patterns, and levels of mental stress. Certain conditions, such as endometriosis and polycystic ovary syndrome (PCOS), can also affect the menstrual cycle. If menstruation occasionally arrives a few days earlier or later, it is usually due to irregular habits or excessive stress, and there is typically no need for excessive concern. However, if the menstrual cycle continues to shorten by more than seven days and this persists for over a year, it is advisable to seek a check-up at a hospital.
As for whether a short menstrual cycle can lead to early menopause, from a scientific perspective, the length of the menstrual cycle does indeed have some influence on the timing of menopause. Since women have a limited number of eggs they can release throughout their lives, women with shorter cycles may experience menopause slightly earlier. However, a normal menstrual cycle typically ranges from 21 to 36 days; as long as the length of each cycle remains relatively stable, women need not worry excessively. Maintaining good lifestyle habits and properly caring for the body can also help delay the onset of menopause.
So, how can one assess ovarian function and fertility? In addition to self-observing the menstrual cycle, women can evaluate their ovarian reserve through AMH testing. AMH is currently the most accurate biomarker reflecting ovarian reserve and can also predict menopause timing and diagnose ovarian insufficiency. Additionally, hormonal testing can help understand a woman's endocrine status and fertility.
It is important to note that menstruation is just one indicator of a woman's fertility. Many women of childbearing age still lack sufficient knowledge about fertility and related scientific information. In this regard, Dr. Nathan Zhang, founder of IVF USA and an expert in assisted reproduction, particularly calls for women to undergo regular fertility testing after the age of 30 and to take appropriate measures based on their ovarian function. As women age, the quality of their eggs gradually declines, especially after age 35, leading to a significant reduction in overall fertility.
If you have any questions about fertility testing or egg freezing technology, feel free to consult Dr. Nathan Zhang at IVF USA. Currently, IVF USA provides services for egg freezing and IVF in the U.S., with operations expanding to IVF and egg freezing in Japan, Thailand, Mexico, Taiwan, Hong Kong, and other regions, closely collaborating with global IVF doctors. We are dedicated to providing personalized fertility assessments and advice to every woman, helping you plan your future scientifically.
