How many days is a normal menstrual cycle?Detailed explanation of cycle patterns and influencing factors

The first paragraph: summary of content
The normal menstrual cycle is usually21-35 days, an average of 28 days, divided intoMenstrual phase, follicular phase, ovulation phase and luteal phaseFour stages.The length of the cycle varies from person to person and is affected by factors such as age, hormones, and lifestyle habits.This article will start from the definition of cycle, phase characteristics, abnormal judgment and conditioning suggestions to help women scientifically understand menstrual health.

Section 2: Cycle definition and stage division
The menstrual cycle refers to the length of time from the first day of menstruation to the day before the next menstrual period.Take 28 days as an example:Menstrual period (1-5 days)Shedding of the lining of the uterus;Follicular phase (6-14 days)follicle development;Ovulation period (around day 14)egg release;Luteal phase (15-28 days)Formation of corpus luteum.If the cycle is shorter than 21 days, it means frequent menstruation, and if the cycle exceeds 35 days, it means oligomenorrhea, both of which require attention.

Paragraph 3: Influencing factors and individual differences
Women's cycles during adolescence and perimenopause may be irregular; stress, weight loss, or excessive exercise can lead to longer cycles; polycystic ovary syndrome (PCOS) often accompanies cycle disorders.Recording basal body temperature or using a menstrual app can help track cycle changes.The American College of Obstetricians and Gynecologists (ACOG) states that cyclical fluctuations in±7 daysWithin the normal range.

Paragraph 4: Abnormal judgment and medical advice
If it appearsPersistent amenorrhea, cycle <21 days or >35 days, sudden increase/decrease in menstrual flowIn other cases, it is recommended to seek medical treatment for hormone six tests or B-ultrasound.Common conditioning methods include: taking short-acting contraceptive pills (such as Yasmin) as directed by the doctor, conditioning with traditional Chinese medicine (such as motherwort granules), improving work and rest, etc.Avoid self-administering hormonal medications.

Paragraph 5: Summary and health tips
The menstrual cycle is a "barometer" of women's health, and regular cycles reflect endocrine balance.It is recommended to keepBalanced diet, moderate exercise, emotional management, have a gynecological examination every year.If cycle abnormalities last for more than 3 months, thyroid function, premature ovarian failure and other diseases need to be checked.Correctly understand the characteristics of the cycle and avoid excessive anxiety.

Quote sources:
1. American College of Obstetricians and Gynecologists (ACOG) "Guidelines for the Diagnosis of Abnormal Uterine Bleeding"
2. "Diagnosis and Treatment Guidelines for Polycystic Ovary Syndrome in China" by the Obstetrics and Gynecology Branch of the Chinese Medical Association
3. Drug reference: Yasmin (Bayer Pharmaceuticals), Motherwort Granules (Tongrentang)