The American Cancer Society is delaying the recommended age when a woman should start receiving annual mammograms, based on new research that shows the average risk for breast cancer increases near menopause. Most women should receive annual mammograms between the ages of 45 and 54, then transition to screening every 2 years for as long as they remain healthy, according to the new breast cancer screening guidelines. Via MedlinePlus. Posted October 20, 2015.