How many days is the menstrual cycle

Most women have a certain regularity in their menstruation, and the regularity of menstruation is also an important symbol of women's physical health. All women should know some relevant knowledge about menstruation so that they can effectively determine whether their menstruation is at a normal level. Since each woman's physical condition is different, the menstrual cycle is also different, but it should be controlled within a certain range. So what is the normal range of a woman's menstrual cycle?

1. How many days is a normal menstrual cycle?

The normal menstrual cycle of a normal woman is 28 days, and a delay or advance of 7 days is within the normal range, that is, 21 to 35 days.

Normal menstruation is cyclical. The first day of menstrual bleeding is regarded as the beginning of the menstrual cycle, and the interval between the first days of two menstrual periods is called a menstrual cycle. A menstrual cycle generally lasts 21 to 35 days, with an average of 28 days. The length of a woman's menstrual cycle varies from person to person. Occasionally, it can be considered normal if it is advanced or delayed by no more than 7 days. That is, the menstrual cycle should not be less than 21 days and not more than 35 days. Such a menstrual cycle is a normal menstrual cycle.

Of course, the menstrual cycle varies from woman to woman. Under normal circumstances, every woman should have her own menstrual cycle, but some women have a menstrual cycle of less than 20 days, or some women have a menstrual cycle of up to 36 days. However, according to clinical investigations and statistics from relevant departments, only about 10% of women have their menstruation every 28 to 30 days.

Therefore, it is generally believed that as long as the interval between each menstrual period is the same, it is normal. If menstruation is irregular, early or late, it is an abnormal phenomenon. There are many factors that affect the menstrual cycle, one of which may be a symptom of a certain disease. This requires accurate recording of the time of each period, otherwise it is difficult to infer based on impression alone.

2. Why do women have so many different menstrual cycles?

Western medicine believes that this is related to the length of time the follicles take to develop. People whose follicles develop for a long time have longer menstrual cycles. A menstrual cycle is divided into the menstrual phase, follicular phase, ovulation phase and luteal phase. At the same time, the endometrium goes through a process of cyclical thickening and congestion, from stripping and bleeding to gradual thickening and congestion. However, this process takes longer for some people and less time for others, resulting in some people having a longer menstrual cycle and some people having a shorter one.

3. How to calculate the menstrual cycle?

As a woman, you should know more about this aspect. Knowing how to calculate your menstrual cycle is a necessary skill so that you can better understand your physical health.

The calculation of the menstrual cycle should include the time of menstruation. The first day of menstruation is regarded as the beginning of the menstrual cycle, and the interval between two menstruations is the menstrual cycle. Some women also use menstrual cycle calculators to calculate their menstrual cycles. Menarche usually starts when a woman is 13 to 14 years old, at the earliest at 11 years old or at the latest at 15 years old. This indicates that the woman's ovarian function has matured, which means that she has the ability to reproduce. Normal menstruation is cyclical. The menstrual cycle refers to the time between the first days of two menstrual periods.