What causes scanty menstrual flow?

Generally, light menstrual flow may be caused by individual differences, hormonal regulation during early puberty, endocrine disorders, anemia, polycystic ovary syndrome (PCOS), and other factors. If the above conditions occur, it is recommended to seek medical attention promptly. Specific analyses are as follows:

1. Individual Differences

Physiological structure and function vary among individuals. Some women naturally have lighter menstrual flow, which is usually a normal physiological phenomenon related to genetic and constitutional factors. In daily life, it's important to maintain a balanced diet and engage in moderate exercise.

2. Hormonal Regulation in Early Puberty

During early puberty, the female reproductive system has not yet fully matured, and menstrual cycles and flow volumes may still be adjusting, leading to irregular or reduced menstrual flow. Regular physical examinations and self-monitoring are recommended.

3. Endocrine Disorders

Stress, staying up late, and irregular lifestyles may lead to endocrine imbalances. Such imbalances can affect the normal growth and shedding of the uterine lining, resulting in reduced menstrual flow. Symptoms may include irregular menstrual cycles and rough skin. Treatment under medical guidance may include medications such as progesterone capsules, Guizhi Fuling capsules, or Wuji Baifeng pills.

4. Anemia

Anemia may result from abnormal hematopoietic regulation or trauma. Anemia reduces overall blood circulation, thereby affecting menstrual volume and causing lighter periods. Symptoms may include dizziness and palpitations. Treatment should be conducted under a doctor’s supervision using medications such as ferrous sulfate tablets, folic acid tablets, or vitamin B12 injections.

5. Polycystic Ovary Syndrome (PCOS)

PCOS may be associated with genetic factors, hormonal imbalances, and insulin resistance. Multiple follicles in the ovaries develop simultaneously but fail to release mature eggs, leading to hormonal disturbances and consequently reduced menstrual flow. Symptoms may include hirsutism (excessive hair growth) and acne. Patients should follow medical advice and use medications such as ethinyl estradiol cyproterone acetate tablets, metformin hydrochloride tablets, or clomiphene citrate capsules.

In daily life, maintaining healthy habits, ensuring balanced nutrition, and engaging in moderate exercise are essential for overall health and can help promote normal menstrual regulation.