Estrogen is closely related to a woman’s bones! Understanding the relationship between estrogen and a woman’s bones and the two low peaks of estrogen in a woman’s life forms the theoretical basis for calcium supplementation. Estrogen brings 1.Promotes the absorption of calcium. 2.Reduces the excretion of calcium from the kidneys. 3.Help calcium to be better deposited on the bones. After giving birth to a baby, many mothers devote themselves to raising their babies, and they can be very attentive to them. However, it is not only the BB that needs care, the mother should also pay attention to the condition of her own body, especially the problem of calcium deficiency. Generally speaking, mothers secrete about 700 ml of milk every day, and breastfeeding mothers lose an average of about 300 mg of calcium per day, their body estrogen is at a low level, lactogen is at a high level, and before menstruation returns, the ability of bones to renew calcium is at a low level, the calcium secreted into milk is using the mother’s own calcium reserves, at this time, if calcium is not replenished in time, it is easy to cause cramps, loose teeth, osteoporosis, etc. If calcium is not replaced in time, it may cause cramps, loose teeth, and osteoporosis. In the first 5 years after menopause, due to the rapid decline of estrogen, bone metabolism tends to malfunction, showing that the bone resorption process is significantly greater than the bone formation process. At this time, bone loss presents a period of rapid decrease in bone mass, which can be reduced at a rate of 2%-5% per year. Therefore, during this period, women should pay special attention to strengthen the preventive health care link for osteoporosis in order to reduce the incidence of osteoporosis.