What does it mean when menstrual blood is black?
Dec 01, 2021
Source: Cainiu Health
Dr. Xu Yongqian
Introduction
1. Cold uterus: When women experience menstrual bleeding with dark clots, this is primarily due to a “cold uterus” (a TCM concept referring to insufficient yang energy and poor circulation in the uterus).
2. Deficiency of qi and blood: Severe deficiency of qi and blood can also lead to dark menstrual clots.
3. Excessive work-related stress: High levels of occupational stress may cause emotional instability in women—such as irritability or anger—resulting in impaired flow of qi and blood.
Healthy women typically experience menstruation each month. Under normal circumstances, menstrual blood is bright red and free of clots. However, many women notice dark or black menstrual blood—sometimes accompanied by clots—during their periods. When this occurs, it warrants attention, as it may indicate an underlying abnormality. So, what causes black menstrual blood? Let’s explore this together.
What Causes Black Menstrual Blood?
1. Cold Uterus (Uterine Coldness)
Black clots during menstruation are often linked to “cold uterus”—a traditional Chinese medicine (TCM) concept referring to insufficient warmth in the uterine environment. Many women neglect body warmth, especially in cold weather, by wearing insufficient clothing, leading to abdominal chilliness. Though symptoms may go unnoticed daily, black clots often appear during menstruation. Women should prioritize keeping the abdomen and lower back warm—avoid sacrificing health for fashion.
2. Qi and Blood Deficiency
Severe deficiency of qi (vital energy) and blood can also result in dark menstrual blood and clots. This deficiency may manifest as anemia, which—when severe—can disrupt menstrual regularity. In such cases, herbal tonics that replenish qi and nourish blood may be beneficial. Dietary support includes consuming jujube dates regularly and drinking brown sugar water during menstruation.
3. Excessive Work-Related Stress
High levels of occupational stress can destabilize a woman’s emotions, triggering irritability or anger. These emotional fluctuations may impair circulation, causing abdominal coldness and stagnation of qi and blood. Chronic stress, combined with suppressed emotions, poor appetite during menstruation, fatigue, and frequent overtime work, can contribute to dark menstrual blood and clots.
How to Manage Menstrual Blood with Dark Clots
Maintain Emotional Well-being
Avoid emotional stress and mood swings. Mild premenstrual or menstrual symptoms—including lower abdominal distension, low back soreness, breast tenderness, mild diarrhea, fatigue, drowsiness, mood instability, irritability, or melancholy—are common and generally considered normal.
Practice Good Hygiene
Maintain cleanliness of the external genitalia. Sexual intercourse is strictly contraindicated during menstruation. Stay warm and avoid exposure to cold. Avoid overexertion. Women with heavy menstrual flow should avoid consuming brown sugar.
Avoid Raw, Cold Foods
Limit spicy, sour, and otherwise stimulating foods. Drink plenty of warm water and maintain regular bowel movements. Women with heat-related menstrual patterns (e.g., early, heavy, or bright-red flow) should consume more fresh fruits and vegetables before menstruation, while avoiding pungent, heat-inducing foods such as scallions, garlic, leeks, and ginger. Those with qi and blood deficiency should enhance nutrition with foods like milk, eggs, soy milk, pork liver, spinach, lean pork, chicken, and lamb—and avoid raw, cold fruits and vegetables.
The above outlines potential causes and management strategies for black menstrual blood. Additionally, women are advised to choose breathable, well-ventilated underwear, wash and change them frequently, and dry them thoroughly in sunlight. We hope this information is helpful to you.
