Changes

Use of the pill has been shown to cause [[breast cancer]], the most common cancer in women, increasing the risk by almost 50% according to an analysis of 34 different studies.<ref>http://breastcancer.about.com/b/2006/11/10/birth-control-pill-increases-breast-cancer-risk.htm</ref>

Use of the pill has been shown to cause [[breast cancer]], the most common cancer in women, increasing the risk by almost 50% according to an analysis of 34 different studies.<ref>http://breastcancer.about.com/b/2006/11/10/birth-control-pill-increases-breast-cancer-risk.htm</ref>

There is also an increased risk of cervical and liver cancer.

There is also an increased risk of cervical and liver cancer. Additionally, there is a decreased risk of endometrial and ovarian cancer. <ref>http://www.iarc.fr/ENG/Press_Releases/pr167a.html</ref>