Postpartum hair loss is a normal physiological phenomenon caused by changes in hormone levels in the body. Postpartum hair loss is also related to calcium deficiency, so calcium supplementation is possible. However, calcium deficiency is not the main cause of postpartum hair loss. The main reason is the decrease in estrogen levels in the body, which causes the hair follicles to enter a shedding state from a resting state. At this time, it is important to enhance nutrition, eat more foods rich in protein and vitamins, and ensure adequate sleep to regulate the body's immunity. Once the body is well-regulated, such hair loss will generally recover naturally.