The general recommendation for getting a mammogram for women at average risk of breast cancer is to start screening at age 40. According to the U.S. Preventive Services Task Force (USPSTF) and many medical organizations, women aged 40 to 74 should get mammograms every two years, though some experts and groups advocate for annual screening. Women with higher risk factors may need to start earlier, sometimes as early as age 25 to 30, and might also require additional screening tests such as breast MRI. Decisions about when to start and how often to get mammograms should ideally be made in consultation with a healthcare provider based on individual risk factors.
Mammogram Guidelines for Average Risk
- Start at age 40.
- Screening every 1 to 2 years until age 74.
- Some organizations recommend annual screening from age 40.
- Women aged 40-49 should discuss individualized screening timing with their doctors due to varying risk factors.
Mammogram for Higher Risk
- May start screening earlier, around ages 25 to 30.
- May require additional imaging such as breast MRI.
- High risk includes having genetic mutations (e.g., BRCA1, BRCA2), family history, or prior chest radiation before age 30.
Rationale for Guidelines
- Breast cancer incidence in women in their 40s has been increasing.
- Early detection through mammograms improves survival and treatment success.
- Dense breast tissue may require additional imaging methods for effective screening.
Thus, the best approach to mammogram screening is tailored to individual risk, but starting mammograms at age 40 for average-risk women is currently the general guideline endorsed by many professional bodies.

