Other experts point to data that suggests lowering the screening age may not improve outcomes.
Should routine breast cancer screening begin at age 40 or 50? What may seem like a straightforward question is at the centre of a highly charged debate that’s been playing out in recent months as a national task force prepares a long-awaited update to Canada’s screening guidelines.
But other experts point to data that suggests lowering the screening age may not improve outcomes. In fact, evidence shows that regular mammograms have no impact on breast cancer mortality rates for women in their 40s and may do more harm than good. Renée Pellerin, a journalist who authored a 2018 book questioning the benefits of mammography, said messages about screening are oversimplified to the point of being harmful. Women in their 40s often hear that mammograms save lives without understanding how rare breast cancer mortality is at that age or about the chance of unnecessary follow-ups or invasive procedures.One of the main reasons the U.S.
Last month, a paper published in the New England Journal of Medicine looked at breast cancer mortality data from four countries: the U.K., Denmark and Switzerland, which don’t offer screening to women in their 40s; and the U.S., where around 60 per cent of women in that age group get routine mammograms. The mortality rate was lowest in Switzerland, followed by Denmark, then the U.S. and the U.K.
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