What causes very light menstrual flow?

Very light menstrual flow may be caused by multiple factors, which can mainly be summarized as follows:

1. Physiological factors: Irregular作息 (lifestyle), long-term熬夜 (staying up late), or excessive dieting may lead to endocrine disorders, thereby causing a decrease in menstrual flow. According to studies, insufficient sleep and inadequate nutrition can both interfere with the endocrine axis and affect menstrual volume.

2. Uterine factors: Underdeveloped uterus, endometrial damage or adhesions, and uterine fibroids can all affect menstrual flow.

3. Endocrine disorders: Conditions such as diminished ovarian function and polycystic ovary syndrome can affect the normal secretion of estrogen and progesterone, leading to insufficient endometrial growth and reduced menstrual flow.

4. Traditional Chinese medicine (TCM) factors: Reduced menstrual flow is often due to blood stasis or blood deficiency, which may be related to emotional distress, irritability, and anger.

For cases of very light menstruation, timely medical consultation is recommended to determine the cause through detailed medical history taking, physical examination, and necessary auxiliary tests such as blood tests, ultrasound, and endocrine testing, followed by targeted treatment. Additionally, maintaining good lifestyle habits, balanced nutrition, and moderate exercise can help improve menstrual health.