Understand women’s menstrual cycle through body temperature

　　　　In addition to ovulation, the ovaries also secrete hormones, mainly estrogen and progesterone. Before ovulation, the main focus is on the growth and maturation of follicles, and estrogen is mainly secreted at this time. The follicles after ovulation form the corpus luteum, which can produce two hormones, estrogen and progesterone. Progesterone can stimulate the body temperature center and cause the body temperature to rise slightly. In normal women, the body temperature can rise by 0.3-0.5 degrees Celsius after ovulation.

　　People can measure changes in body temperature by checking their basal body temperature. The method is to measure your own body temperature after sleeping for a long period of more than 6-15 hours, before waking up, and before doing any activities. After getting up, record the measured body temperature on the basal body temperature sheet, and proceed day by day to draw a curve.

　　The normal curve is slightly lower before ovulation and lowest during ovulation.； After ovulation, the body temperature is higher than during the follicular phase due to the thermogenic effect of progesterone. Therefore, the normal curve is biphasic. The anovulatory menstrual cycle lacks progesterone and does not have the above-mentioned regular changes. The body temperature is consistent and monophasic.

　　The meaning of body temperature changes:

　　1. Biphasic body temperature can be used as an important indicator of ovulation. The ovulation time is within 2-3 days before the change in biphasic body temperature. Monophasic body temperature can confirm the absence of ovulation and the formation of the corpus luteum.

　　2. If the high-temperature phase of bipolar body temperature (luteal phase) exceeds 16 days, there is a possibility of pregnancy. For those under treatment, infertility It is a good sign for patients to have habitual abortion Historians should take protective measures at this time.

　　3. It is generally believed that the high-temperature period of the body temperature curve should not be less than 12 days, and the increase should not be less than 0.3-0.5 degrees Celsius, otherwise it means that the corpus luteum function is insufficient.