Feb 18, 2014 7:27 PM by Annie Snead, NBC
One of the most expansive mammography studies to date, is casting new doubt about the value of the screening intended to detect breast cancer.
It found regular mammograms did not reduce death rates, bucking medical guidelines that women over 40 get screened annually.
But cancer experts are urging women to stick with the test. The study in Canada, profiled nearly 90,000 women over 25 years.
It found the screening didn't save lives and nearly a quarter of the time, led to false alarms.
The American Cancer Society is adamant screening saves lives and women should keep it up.
"This is one page in a very large book on breast cancer screening so i don't think this one study should be a game changer in any way," said Dr. Otis Brawley, with the American Cancer Society.
"Screening mammography has saved lives and individual studies shouldn't convince a woman to not do mammography or a health care provider not to do mammography when there's other studies that give other information," said Dr. Bert Carollo with Memorial Hospital.
The American Cancer Society recommends women 40 and older get a mammogram every year.
And remember to do your monthly breast exam as well.
As always, it's best to talk to your doctor if you have any questions.