Recently, the topic of "it turns out that my aunt's postponement is due to physical ischemia" has been on the hot search.
Image source: Weibo screenshot
Many people "popularize science": the body has a self-regulation mechanism, if it senses that "there is not enough blood", it will delay menstruation, and when there is enough qi and blood, menstruation will return to normal.
Is this really true?
Ischemia and anemia
It's not the same thing
Ischemia in the medical field refers to the restriction of blood supply to certain organs, tissues, and muscle groups in the body due to vascular lesions, trauma, infection, etc., which cannot allow cells to obtain oxygen to maintain normal metabolism, and eventually leads to tissue damage or dysfunction.
And when netizens mention the topic of menstruation, the physical ischemia, in medicine, mostly points to anemia.
Most of its symptoms can only be understood, such as dizziness, tinnitus, fatigue, and insomnia.
However, usually, mild anemia does not have much effect on menstruation, and only severe anemia can cause delayed or light menstrual periods.
Delayed menstruation
It's not what you think
Menstruation is a month, but it is not strictly a 30-day visit.
A woman's menstrual cycle usually consists of three phases: follicular phase, ovulation, and luteal phase.
The last two phases of the menstrual cycle, ovulation and luteal phase, tend to last the same for one day and 14 days respectively, while the speed of follicle development varies from person to person, which determines that everyone's menstrual cycle will be different.
Based on the date of the first bleeding of the last menstrual period and the next menstrual period, the menstrual cycle is normal as long as it is between 21 and 35 days, and it is not necessary to judge whether the menstrual period is delayed based on whether the specific dates are the same.
Secondly, menstruation is easily affected by factors such as mood, exercise, diet, etc., and there is also an occasional phenomenon of "late arrival and early arrival".
What are the factors that cause menstruation to be delayed?
In addition to anemia, there are many other factors that cause delayed menstruation.
1
pregnant
"Pregnancy will not have menstruation" is a common sense, but its principle is not well known.
The last stage of the menstrual cycle is the luteal phase. It refers to the fact that when an egg in the ovary matures and is expelled, the follicle wall collapses into the corpus luteum, continuously releasing estrogen and progesterone, further thickening the endometrium.
If the egg does not combine with the sperm within 14 days, the corpus luteum will shrink, causing the already thickened endometrium to lose support and bleed. However, if the egg is combined with the sperm, the corpus luteum will become the corpus luteum of pregnancy, which will continue to secrete estrogen and progesterone and continue to nourish the endometrium. Menstruation naturally does not visit.
2
drugs
Medications that contain progesterone, such as progesterone and emergency contraceptives, can also cause delayed menstruation. The principle of this type of drug is actually to prolong the luteal phase.
3
Endocrine disorders
Excessive weight loss can lead to malnutrition, or a low body fat percentage, which can affect estrogen synthesis.
Of course, excessive obesity is not good, too much fat can cause endocrine disorders, which affect the secretion of gonadotropins, causing follicles to not develop normally and ovulate, thus causing menstrual abnormalities.
In addition, factors such as irregular sleep, reversal of day and night, and staying up late can also cause endocrine disorders and delay menstruation.
4
surgery
Surgery often causes anxiety or excessive tension, which in turn affects the menstrual cycle.
5
Chronic illness
Chronic wasting diseases such as chronic hepatitis, tuberculosis, and tumors can lead to nutritional deficiencies in the human body, which can cause menstrual changes.
6
Gynecologic endocrine diseases
If you experience delayed menstruation, obesity, hirsutism, acne and other symptoms, you may suffer from polycystic ovary syndrome.
2024
China Women's Daily, China Women's Movement
Source/Science Refutation of Rumors, Popular Science China Pictures/Editor-in-Charge of Photography Network/Tian Yuan Huang Die, Chen Xiaobing's Review/Yifan Producer/Zhifei