How often are mammograms recommended to be performed?

Mammograms are recommended to be performed every two years for women aged 50 to 74 years, according to many health guidelines. This frequency is supported by several large-scale studies and is aimed at balancing the benefits of early breast cancer detection with the risks associated with false positives and overdiagnosis.

Annual screening, while common in some practices or based on individual risk factors, is generally reserved for women who have a higher risk of breast cancer or who have specific considerations that warrant closer monitoring. Screening every three or five years is insufficient for this age group, as it may miss early-stage cancers that could be effectively treated if caught earlier. Therefore, the biannual recommendation reflects a consensus designed to maximize the benefits of screening while minimizing harms.