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
Common questions
What age should I start mammograms?
For women at average risk, 40. The US Preventive Services Task Force recommends a mammogram every 2 years for women 40 to 74 at average risk - guidance updated in 2024 that pulled the starting age down from 50. Average risk means no personal history of breast cancer, no strong family history, and no known high-risk gene mutation. If your mother or sister had breast cancer - especially young - or you carry a BRCA mutation, your timeline starts earlier and may add MRI; that schedule comes from your doctor, not the general guideline. Between screenings, know your own baseline: a new lump, skin change, or nipple discharge is worth a prompt visit at any age, since screening intervals are for people without symptoms. Pymander, a free AI doctor available 24/7 by text, can help you work out which risk category you fall in and what to ask for.