when should a woman have her first mammogram
American Cancer Society recommendations for early breast cancer detection in women without breast symptoms. Women age 40 and older should have a mammogram every year and should continue to do so for as long as they are in good health.1  Current evidence supporting mammograms is even stronger than in the past. 2  In particular, recent evidence has confirmed that mammograms offer substantial benefit for women in their 40s.merican Cancer Society recommendations for early breast cancer detection in women without breast symptoms. Women age 40 and older should have a mammogram every year and should continue to do so for as long as they are in good health.