No one receives chemotherapy from a screening mammogram alone, there are always further diagnostic tests before treatment. Though there are probably unneccessa

No one receives chemotherapy from a screening mammogram alone, there are always further diagnostic tests before treatment. Though there are probably unneccessary biopsies. Screening mammograms do reduce breast cancer mortality: https://pubmed.ncbi.nlm.nih.gov/33141657/ https://pubmed.ncbi.nlm.nih.gov/33141657/ Annual mammographic screening at the age of 40-49 years resulted in a relative reduction in mortality, which was attenuated after 10 years. It is likely that digital mammography with two views at all screens, as practised now, could improve this further. There was no evidence of overdiagnosis in addition to that which already results from the National Programme carried out at later ages.