Starting this week, all mammography reports and result letters to patients in the United States will be required to include an assessment of a patient’s breast density.

As of Sept. 10, the U.S. Food and Drug Administration requires those getting mammogram results to also receive notice about breast density, which can help with breast cancer screenings.

The FDA will now require all mammography reports to include whether a person has breast density. Breast density is considered a risk factor for breast cancer and can make it difficult to detect signs of cancer.