The One Simple Thing You Can do to Radically Lower Your Risk of Cancerhttp://articles.mercola.com/sites/articles/archive/2007/03/08/staying-active-with-exercise-lowers-a-womans-breast-cancer-risks-for-a-lifetime.aspxUpwards of six hours of strenuous activity each week could reduce the risks of invasive breast cancer by as much as 23 percent. A recent survey of over 15,000 women shows that exercise has a lifelong protective effect against invasive breast cancer. TheenCommunityServer 2008.5 SP1 (Build: 31106.3070)