National Mammography Day Date in the current year: October 16, 2026

Breast cancer is one of the most common types of cancer, particularly among women, though men can develop it as well since they have breast tissue, too. Outcomes for breast cancer vary depending on the specific type, but the five-year survival rate is more than 90% in developed countries if the cancer is detected early and the patient receives appropriate treatment.

Breast cancer screening is used to detect cancer early in patients who are not experiencing symptoms. The most common type of screening is mammography, also known as mastography. This type of X-ray imaging uses low-energy ionizing radiation to detect abnormalities in breast tissue. Mammography became widespread in the mid-1980s and has since helped to significantly reduce the breast cancer death rate in developed countries where screening programs have become routine.

However, low-energy ionizing radiation is still ionizing radiation. Frequent exposure to X-rays increases the risk of cancer. Therefore, it is important to strike a balance where the benefits of early breast cancer detection outweigh the dangers of radiation exposure. Age is a major risk factor for breast cancer; therefore, routine mammography is rarely recommended for asymptomatic women under 40, unless other risk factors are present, such as a family history of breast cancer.

There is no general consensus among medical organizations on the optimal age to begin regular mammography screenings or the interval between screenings. In many countries, the recommended age to start getting regular mammograms is 40 because the risk of breast cancer starts to increase at this age. However, some organizations recommend starting regular screenings at 45 or 50, arguing that the potential harms of routine mammography may outweigh the benefits for women in their early 40s.

As for the interval between screenings, some organizations recommend yearly screenings, while others argue, while others argue that biennial mammography is sufficient in the absence of symptoms or risk factors other than age.

Bill Clinton first designated October 19 as National Mammography Day through a presidential proclamation issued on October 18, 1993. Since then, multiple healthcare organizations across the nation have observed the day, and several subsequent presidents have issued similar proclamations However, the observance has been moved from October 19 to the third Friday of the month.

The best way to observe National Mammography Day is to learn about the benefits and risks of routine mammography, so you can make an informed decision. If you are at an age where the benefits outweigh the risks, consider scheduling a mammogram if you haven’t had one in the past two years.