The following post was written by Susan G. Komen.
It’s well established that hormones play a key role in breast cancer risk.So, it’s not surprising that factors related to fertility and pregnancy have been actively studied to better understand their relationship with breast cancer. These include, age at menopause, age at first period, childbearing (number of children and age at first childbirth) and use of menopausal hormone therapy (postmenopausal hormones).
The potential link between birth control pills and breast cancer has also been well studied. And, studies have looked at a possible link between the use of fertility drugs and breast cancer. At this time, results from these studies point to some solid conclusions, with some results still up in the air. These findings and other issues related to birth control pills and fertility drug are discussed below.