The conclusion of a 25 year prospective study published in the British Medical Journal in February of 2014 was that screening mammograms not only do not save lives but also lead to a 22% over-diagnosis that leads to unnecessary testing and treatment in women between the ages of 50 and 69.
After all these years of policy set by governments, research funders, scientists, medical doctors, big pharma, American Cancer Society, and the entire mammography industry, there is now solid evidence that they were promoting screening mammograms based on weak and incorrect scientific studies. You can bet your bottom dollar that despite this solid scientific study on 90,000 women, that because of conflicts of interest related to vested interests that nothing much will change! Very sad scenario...