http://articles.mercola.com/sites/articles/archive/2002/04/06/colon-cancer-part-one.aspxA daily calcium intake of at least 700 milligrams may significantly reduce the risk of developing cancer in the lower part of the colon. Daily calcium intake beyond this level does not appear to add any further protection against colon cancer. ResearchersenCommunityServer 2008.5 SP1 (Build: 31106.3070)