Here are some risk factors of breast cancer.
- Number of first-degree relatives with breast cancer
- Women who had their first menstrual period before age 12
- Women who had their first pregnancy after age 30 or women who have never had a full-term pregnancy
- Number of previous breast biopsies
- Women with breast cancer are more likely to develop a second breast cancer
- Presence of atypical hyperplasia, a non-cancerous condition that causes changes to breast cells
- Mammographic breast density
- Excessive alcohol consumption
- Body Mass Index greater than 30
- Physical inactivity