http://articles.mercola.com/sites/articles/archive/2001/11/24/birth-control-part-one.aspxWomen who are taking birth control pills have lower bone mineral density (BMD) than women who have never used oral contraceptives. Past studies in postmenopausal women have found that supplementation with the hormones estrogen and progestin actually helpsenCommunityServer 2008.5 SP1 (Build: 31106.3070)