The latest medical guidelines recommend that women and people assigned female at birth with an average risk of breast cancer start getting regular screening mammograms at age 40. The U.S. Preventive Services Task Force advises mammograms every other year between ages 40 and 74. Some organizations suggest annual mammograms starting at age 40, while others recommend discussing the timing and frequency individually with a doctor. Those with higher breast cancer risk—due to family history, genetic markers (e.g., BRCA1/2), previous breast cancer, or chest radiation—should talk with their doctor early to determine when to begin screening, which could be earlier than age 40. Additionally, people with dense breast tissue may require supplementary imaging like ultrasound or breast MRI. In summary:

• Average risk: begin mammograms at age 40, with screening every 1 to 2 years
• High risk: screening may start earlier, often with additional imaging
• Continue screening through age 74 or longer depending on health and doctor’s advice

This guidance aims to detect breast cancer early when it is most treatable, improving survival and quality of life.