Every time I have an ultrasound, I am always asked, “Doctor, how thick is my lining, is it too thin, is it 8, is it 14, is it too thin? Why is my lining so thin? Can drinking soy milk and eating black beans make my lining grow? Look closely at my expression should be like this: you let the lining of only 5 embarrassed, if black beans really have such a miraculous effect, I seem to have seen a new way to get rich. In fact, the thickness and shape of the lining in the menstrual cycle is not static, under normal circumstances, the menstrual period lining shedding, followed by the endometrium with the development of the follicle, its secretion of estrogen so that the lining gradually thickened, generally in the ovulation of the thickest, if you want to say that the most suitable for the pregnancy of the thickness of the lining of the uterus, it is more than a certain value, the study found that the thickness of the lining of the 5mm to more than 15mm surprisingly, there are Research has found that endometrial thickness from 5mm to more than 15mm has a similar chance of success, and even endometrial thickness of less than 4mm has also been reported in cases of successful pregnancy and delivery, but generally speaking, both too thick and too thin endometrium are not conducive to embryo implantation, and the pregnancy rate of 8-12mm is the highest, and the thin endometrium may cause miscarriage, preterm labor, as well as low-birthweight newborn babies, etc. What is meant by the name of a thin endometrium? It is generally recognized that an endometrial thickness of less than 7mm around the time of ovulation is called a thin endometrium. What causes thin endometrium? First, multiple uterine surgery The most common cause of thin endometrium is the uterine adhesion caused by surgery, especially the history of multiple abortions, more than 90% of the uterine adhesion is the result of scraping the uterus after the abortion, the damage to the endometrium in the process of repair will lead to the formation of scar tissue between the endometrium, which affects embryo implantation, and may lead to menstrual disorders, and may lead to recurrent miscarriages, preterm labor, placenta adherence, etc., Similarly, a variety of intrauterine operations, including electrocutaneal and intrauterine operations, can be used in the treatment of the endometrium. Intrauterine manipulations including electrosurgery and postoperative hysteroplasty such as mediastinum and bicornuate uterus may cause adhesions in the uterine cavity, leading to thinning of the endometrium. As mentioned in previous articles, some people have many abortions and get pregnant as usual, while others have one abortion and have adhesions in the uterine cavity, the reason can only be answered by a song: So you never know how much each choice affects you. Second, infection In some patients with recurrent abortion, it was found that chronic endometrial inflammation may be the culprit, mostly due to unclean sex or abortion and other post-surgical anti-inflammatory treatment is not standardized resulting in these patients, and compared to patients without treatment, regular, adequate, full course of antibiotics after the end of the treatment is significantly better, the pregnancy rate increased significantly, combined with acupuncture and other traditional Chinese medicine treatment also has a good effect. The combination of acupuncture and other Chinese medicine treatment also has good efficacy. Radiotherapy In some malignant tumors, radiotherapy will lead to smaller uterine cavity, thinner endometrium, reduction of uterine length and impaired endometrial blood flow. The endometrial damage caused by radiotherapy is dose- and age-related, and the younger the age, the more serious the damage and the smaller the possibility of recovery. Congenital developmental abnormality Congenital developmental abnormality can also lead to thin endometrium, and it is difficult to improve through drug treatment. The female reproductive tract develops from the mullerian ducts in the early embryonic stage, and develops into the fallopian tubes, uterus and the upper part of the vagina. The incidence of abnormal development of the mullerian ducts is 5%, and most of them are mediastinal uterus, followed by bicornuate uterus. Only 8% of these patients have chromosomal abnormality, and abnormal expression of some genes, such as homologous framing genes (HOX), also causes developmental abnormality. V. Other unknown causes