(NEWSER) – For years, guidelines regarding mammograms have been, well, all over the place. The US Preventive Services Task Force recommends women get a mammogram every two years starting at age 50. Since 2003, the American Cancer Society has recommended annual mammograms starting at age 40. The society's first mammogram guideline revisions in more than a decade are only complicating matters. A breakdown, per NBC News and CNN:

  • Women with an average risk of breast cancer should have a mammogram every year from age 45 to 54. If a woman wants one sooner, she should be able to start at age 40, as long as she understands false positives are more common at this age.
  • Women over 55 years can continue annual screenings or choose to have a mammogram every two years since breast cancers develop more slowly in post-menopausal women. This is part of what an ACS doctor calls "a personalized approach," per Time.

Read the full story on

PHOTO: Getty Images