The UK breast screening programme may be damaging more women's lives than it saves and should be scrapped, according to a professor.
We don't think a screening programme is justified because recent research has not found an effect on breast cancer mortality, whereas it's clear the programme does lead to harm because many healthy women get a cancer diagnosis that doesn't help them.
Screening detects a lot of cancers that are not dangerous. We call them over-diagnosed cancers, they are pretty harmless.
But many of these are treated by a mastectomy so when you introduce screening, you have more mastectomies. So seen over longer, there are more mastectomies in the screened areas.
Scientists and doctors who treat women with breast cancer have polarised views on the worth of screenings. Can a new report forge consensus?
Breast cancer screening leads to thousands of women undergoing unnecessary treatment despite saving lives, researchers have said.