The following information may help to address your question:
Since LAM occurs almost exclusively in women of reproductive age, researchers believe the hormone estrogen might be involved in the abnormal muscle cell growth that characterizes the disease. Although there is no direct evidence that there is a relationship between estrogen and LAM, the treatment of LAM has focused on reducing the production or effects of estrogen. This could include estrogen or other hormone suppressing drugs. Additionally, doctors believe pregnancy may accelerate the progression of LAM. Women with LAM are urged to speak with a health care professional before getting pregnant.