What causes light menstrual flow?
Generally, "dà yī ma" refers to menstruation. Light menstrual flow may be related to individual differences, endocrine disorders, luteal phase deficiency, anemia, and endometritis. If discomfort occurs, timely medical consultation is recommended. A detailed explanation is as follows:

1. Individual Differences
Menstrual flow varies among individuals. Some women may naturally have lighter periods. As long as the menstrual cycle is regular and there are no uncomfortable symptoms, this generally does not require concern.
2. Endocrine Disorders
Endocrine disorders may be caused by long-term late-night habits, anxiety, excessive mental stress, and other factors. These can lead to insufficient estrogen secretion, affecting endometrial growth and shedding, thereby causing reduced menstrual flow. At this time, maintaining a regular lifestyle, going to bed early, waking up early, and ensuring adequate sleep are recommended.
3. Luteal Phase Deficiency
Luteal phase deficiency may be caused by insufficient progesterone secretion during the luteal phase, premature luteal regression, and other factors. This can lead to poor secretory response of the endometrium and a shortened luteal phase, ultimately resulting in light menstrual flow. It may also be accompanied by shortened menstrual cycles and infertility. Treatment may include medications such as drospirenone and ethinyl estradiol tablets, progesterone capsules, or dydrogesterone tablets, under a doctor's guidance.
4. Anemia
Anemia may be related to malnutrition, dieting, excessive blood loss, and other factors. Severe anemia may lead to reduced effective blood volume throughout the body, causing reduced menstrual bleeding and shorter bleeding duration. Accompanying symptoms may include pale complexion, fatigue, and dizziness. Treatment may include medications such as Ejiao Nourishing Blood Granules, Angelica Sinensis Nourishing Blood Oral Liquid, and Shengxuening Tablets, as directed by a physician.
5. Endometritis
Endometritis is an inflammation caused by bacterial infection, which may damage the endometrium, affect uterine ovulation function, and thus lead to reduced menstrual flow. It may also be accompanied by abdominal pain, fever, increased vaginal discharge, and other symptoms. Treatment may include medications such as metronidazole tablets, clindamycin phosphate tablets, and Fuke Qianjin Tablets, as advised by a doctor.
Women are advised to keep the abdomen warm during menstruation, avoid consuming spicy or cold foods, maintain a healthy lifestyle with regular作息 (作息 means作息 in Chinese, which refers to rest and activity schedules), avoid staying up late, and maintain a pleasant mood. Attention should also be paid to genital hygiene, avoiding excessive irritation, and changing underwear frequently to prevent infections and related diseases.