unnecessary interventions – more harm than good

Behind Cancer Guidelines, Quest for Data looks at independent research that http://www.nytimes.com/2009/11/23/health/23cancer.html?_r=1&scp=1&sq=Behind%20Cancer%20Guidelines,%20Quest%20for%20Data&st=cse

In 2002, when the group last reviewed breast cancer screening studies, the idea of overdiagnosis was not well formed. It has been hard for many people, even scientists, to believe that some cancers start then stop or even regress. But researchers all over the world have been finding overdiagnosis in studies of all sorts of cancers.