Can blood deficiency cause delayed menstruation?

Blood deficiency may affect menstruation, leading to delayed periods or irregular menstrual cycles. In traditional Chinese medicine (TCM), blood deficiency refers to insufficient blood volume or reduced blood quality, commonly manifesting as pallor, dizziness, palpitations, and light menstrual flow. When the body lacks sufficient blood and qi, the normal growth and shedding process of the endometrium may be affected, thus disrupting the menstrual cycle. From the perspective of Western medicine, blood deficiency may be related to malnutrition, anemia, or other conditions that impair blood production or circulation. These conditions may indirectly affect the function of the endocrine system, including female hormone secretion, thereby influencing menstruation. For example, iron-deficiency anemia can impair estrogen synthesis, leading to menstrual disorders. If menstrual delay occurs alongside symptoms of blood deficiency, it is recommended to consult a physician for a comprehensive examination to identify the specific cause and develop an appropriate treatment plan. This may include dietary adjustments, administration of blood-nourishing medications, or treatment targeting the underlying condition.