A recent Canadian study found that mammogram ##s do n't reduce cancer deaths . Mammographers slammed it , saying researchers lied and screening machines were old . To make sense of information the Canadian trial offers , you need to understand its unique design -- specifically what is being compared with what . Michael Welch : The charges unfounded , and pro - screening researchers used older machines . Welch : The real problem is that mammography results in women getting treatment they do n't need .
A recent Canadian study found that mammogram ##s do n't reduce cancer deaths . Mammographers slammed it , saying researchers lied and screening machines were old . Michael Welch : The charges unfounded , and pro - screening researchers used older machines . Welch : The real problem is that mammography results in women getting treatment they do n't need .