Mammograms should start at 40 to address rising breast cancer rates, panel says

Regular mammograms to screen for breast cancer should start younger, at age 40, according to an influential U.S. task force. Women ages 40 to 74 should get screened every other year, the group said.

Previously, the task force had said women could choose to start breast cancer screening as young as 40, with a stronger recommendation that they get the exams every two years from age 50 through 74.

The announcement Tuesday from the U.S. Preventive Services Task Force makes official a draft recommendation announced last year. The recommendations were published in the Journal of the American Medical Association.

“It’s a win that they are now recognizing the benefits of screening women in their 40s,” said Dr. Therese Bevers of MD Anderson Cancer Center in Houston. She was not involved in the guidance.

Other medical groups, including the American College of Radiology and the American Cancer Society, suggest mammograms every year — instead of every other year — starting at age 40 or 45, which may cause confusion, Bevers said, but “now the starting age will align with what many other organizations are saying.”

Breast cancer death rates have fallen as treatment continues to improve. But breast cancer is still the second-most common cause of cancer death for U.S. women. About 240,000 cases are diagnosed annually and nearly 43,000 women die from breast cancer.

Age 40 is when mammograms should start for women, transgender men and nonbinary people at average risk. They should have the X-ray exam every other year, according to the new guidance. Other groups recommend annual mammograms, starting at 40 or 45.

The advice does not apply to women who’ve had breast cancer or those at very high risk of breast cancer because of genetic markers. It also does not apply to women who had high-dose radiation therapy to the chest when they were young, or to women who’ve had a lesion on previous biopsies.

It’s not clear whether older women should continue getting regular mammograms. Studies rarely include women 75 and older, so the task force is calling for more research.