What diseases should you be alert to if your menstruation suddenly becomes less frequent at the age of 40?

If menstruation suddenly decreases after the age of 40, you should be alert to gynecological diseases such as sex hormone secretion disorders, intrauterine inflammation, and endocrine disorders caused by thyroid hormone disorders.

1. Sex hormone secretion disorder: First check sex hormones and anti-Mullerian hormone to see if ovarian function has declined and if hormone secretion is disordered. If the ovarian function anti-Amh value is very low, or the FSH value is greater than 20U/L, or even exceeds 40U/L, it indicates that ovarian function has declined. At this time, small menstrual volume may even lead to amenorrhea.

2. Intrauterine inflammation: Be alert to whether there is intrauterine inflammation. Previous surgeries, including abortion and curettage, can damage the endometrium and lead to a decrease in menstrual volume.

3. Thyroid hormone disorder: Thyroid hormones also need to be checked, because thyroid hormones are also female endocrine hormones. Many people have hyperthyroidism or hypothyroidism, which are the original diseases of the thyroid gland and can also cause a sudden decrease in menstruation. After treating thyroid diseases, menstruation will slowly resume.