About 40,000 women die each year of breast cancer in the United States. Mammography screening is one way to detect breast cancer early. However, mammograms have benefits and harms. A review of existing medical studies and trials suggests that mammography screening decisions should be individualized to each patient based on age, risk levels and preferences, according to a study appearing in the April 2 JAMA. Catherine Dolf has more in this JAMA Report video.