There are a number of possible causes of a thin uterine lining, including certain medications, scar tissue, endometris, fibroids in the uterine wall and distal blockage of the fallopian tubes, according to LA IVF. A uterine lining that is less than 7 millimeters thick generally results in issues becoming pregnant or miscarriages.
It is nearly impossible to become pregnant if the uterine lining is less than 5 millimeters thick, as the lining is too thin to properly support an embryo, according to LA IVF.
In most cases, the treatment to thicken the uterine lining is based on the underlying cause, although there are a few general treatments that may produce the desired results, states LA IVF. Vaginal estrogen suppositories are sometimes used to thicken the lining, and some people have also experienced positive results with relaxation techniques, such as acupuncture, although these cases need further study. Some researchers have also been investigating the use of Viagra suppositories to increase blood flow to the uterus to thicken the lining.
In cases of endometris, which is a chronic infection of the uterine lining, antibiotics are usually sufficient to improve the condition, states LA IVF. Intrauterine scars resulting from disease or infection can often be treated with a hysteroscopic procedure, although in some cases the scarring may be too severe ever be fully corrected, according to the Advanced Fertility Center of Chicago. Similarly, fibroids, which are noncancerous tumors in the uterus, also need to be surgically removed.