How thick is the uterine lining to get pregnant?

This is an automatically translated article.

The article was consulted by Specialist Doctor Obstetrician and Gynecologist - Department of Obstetrics and Gynecology - Vinmec Hai Phong International General Hospital

Under the influence of sex hormones, the endometrium thickens depending on the time of month. Thickening of the uterine lining is important for conception.

1. Relationship between uterine lining and conception

The lining of the uterus, also known as the endometrium, is the layer of cells lining the inside of the uterus. Under the influence of female hormones, the uterine lining changes thickness and thickness with the menstrual cycle, age and pregnancy. pregnant. The lining of the uterus plays an important role in conception and pregnancy. During the menstrual cycle, under the influence of hormone, the uterine lining increases, around the middle of the menstrual cycle, the uterine lining is about 8-12mm thick, this period occurs. If conception occurs around the time of ovulation, the body produces a large amount of female hormones, causing the mucosa to proliferate strongly to help the fertilized egg implant.
However, there are some cases where due to insufficient hormones or some other cause, the uterine lining is thinner than 8mm, making it impossible for the embryo to attach to the uterine cavity, leading to miscarriage. Or there are some cases where the uterine lining is too thick, making it more difficult to conceive, which can lead to delayed pregnancy. At the end of the menstrual cycle, if fertilization does not occur, the amount of hormones in the body suddenly decreases, leading to the mucous membrane being shed and pushed out, forming the phenomenon of menstruation.

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2. How thick is the uterine lining to get pregnant?

Before answering the question of how thick the uterine lining is to get pregnant, it is necessary to know the change of the uterine lining according to the menstrual cycle as follows:
The normal uterine lining is about 7-8mm thick. The first phase of the menstrual cycle, after menstruation, is when the uterine lining is at its thinnest, about 3-4mm. In ovulation, the uterine lining is about 8-12mm. In the second half of the cycle, the lining of the uterus is about 12-16mm thick. If your period is delayed, combined with a thick uterine lining between 8-16mm, this is a sign that you are pregnant. So when the uterine lining is about 13mm thick, test with 2 bars, it's likely that you are pregnant and this thickness of the uterine lining is suitable for the development of the fetus.
In some cases, even though you have conceived, but the uterine lining is too thin under 8mm, it is very difficult for the fertilized egg to move from the fallopian tube (where fertilization takes place) to the uterus. adhere to this mucosal layer. Leads to the risk of miscarriage, stillbirth...


Ultrasound image of the uterine lining
Ultrasound image of the uterine lining

3. How to improve the uterine lining?

The lining of the uterus can be too thick or too thin and both of these conditions will affect pregnancy in women. Therefore, when the uterine lining is thick or thin, in addition to drug treatment, it can be combined with a diet to help improve the uterine lining.
3.1 Thick uterine lining Normally, people with thick uterine lining will be prescribed hormone therapy to re-establish the balance between estrogen and progesterone in the body, thereby increasing the woman's ability to conceive. female. In addition, it can be combined with the following regimens:
Regular exercise will help reduce the amount of estrogen hormone in the body and help maintain a reasonable weight. Avoid staying up late, getting enough sleep helps the body secrete hormone balance. Diet: Limit foods derived from soy, foods rich in vitamin C and iron; limit foods containing a lot of vitamin E Re-examine and monitor the condition of thick uterine lining.


Regular gynecological examinations help women detect diseases early
Regular gynecological examinations help women detect diseases early

3.2 Thin uterine lining In addition to treating the main causes of thin uterine lining, it can be combined with regimes such as
Diet: Increase foods rich in iron, vitamin C, vitamin E In addition, you should eat foods derived from soybeans because soy has a similar composition to estrogen. Rest properly, avoid staying up late. Do not have an abortion or abuse fertility drugs too much. In summary, the uterine lining about 8-10mm thick is the most suitable for conception. However, if after acupuncture, the uterine lining is about 8-16mm thick, there is a high chance of pregnancy. The uterine lining is closely related to conception, so if the lining is too thin or too thick, it affects the process of conception and implantation, when there is an abnormal thickness of the uterine lining, it is necessary to examine the cause and fix it. facilitate conception and pregnancy.

For more information, please contact Vinmec Hospitals and clinics nationwide

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