What age should I start mammograms?
Last updated September 3, 2026.
For women at average risk: 40. The US Preventive Services Task Force recommends a mammogram every 2 years from 40 to 74 - guidance updated in 2024 that moved the start down from 50. Average risk means no personal history, no strong family history, and no known high-risk gene mutation. Family history or a BRCA mutation moves the timeline earlier, on your doctor's schedule.
What to do
- Start at 40 if average risk. Every 2 years through 74 is the USPSTF cadence.
- Assess your family history early. A mother or sister with breast cancer, especially young, can mean starting before 40.
- Do not wait for the interval with symptoms. A new lump, skin dimpling, or nipple discharge earns a visit at any age.
- Keep the appointments. Regular screening catches cancer earlier, when it is easier to treat.
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