What is the highest risk factor for breast cancer? After gender, age is the most influential risk factor for developing breast cancer. Women younger than age 40 account for only 4.7 percent of invasive breast cancer diagnoses and only 3.6 percent of in situ breast cancer diagnoses. Over 70 percent of all breast cancer diagnoses are made in women who are 50 or older.
What are the 4 main risk factors for cancer? Age, weight, exposure to carcinogens, and genetics can increase the risk of developing cancer. Learn more from this Did You Know? video produced by NCI’s Surveillance, Epidemiology, and End Results (SEER) program. It is usually not possible to know exactly why one person develops cancer and another doesn’t.
What are the main causes of breast cancer?
- Age. Being 55 or older increases your risk for breast cancer.
- Sex. Women are much more likely to develop breast cancer than men.
- Family history and genetics.
- Alcohol use.
- Radiation exposure.
- Hormone replacement therapy.
What are the 5 warning signs of breast cancer?
- New lump in the breast or underarm (armpit).
- Thickening or swelling of part of the breast.
- Irritation or dimpling of breast skin.
- Redness or flaky skin in the nipple area or the breast.
- Pulling in of the nipple or pain in the nipple area.