Many people think breast cancer only affects older women, but younger women can get it too. While it’s less common for women under age 40, it can still happen. So, it’s important for women of all ages to know their risks and warning signs.1
Risk factors can include:1
- Family history of breast cancer.
- Genetic mutations like BRCA1 and BRCA2.
- Dense breast tissue.
- Lifestyle factors such as alcohol use and obesity.
Warning signs to watch for:2
- A new lump in the breast or underarm.
- Changes in breast size or shape.
- Nipple discharge.
- Skin changes such as dimpling or redness.
Important things to know:3
- Breast cancer in younger women can be more aggressive.
- Don’t ignore unusual breast changes, even if you are under 40.
- Women with higher risk may need earlier or extra screening.
- Finding cancer early improves treatment outcomes.
Many young women believe they are “too young” for breast cancer, but that’s a myth. Breast cancer can occur at any age, and paying attention to your body and health and talking to your doctor about any questions or concerns can make a real difference.2
References
- American Cancer Society. (2024). Breast cancer in young women. https://www.cancer.org/cancer/types/breast-cancer/about/breast-cancer-in-young-women.html
- National Cancer Institute. (2025). Breast cancer—patient version. https://www.cancer.gov/types/breast
- Centers for Disease Control and Prevention (CDC). (2024). Breast cancer risk factors. https://www.cdc.gov/cancer/breast/basic_info/risk_factors.htm
