- Being a woman as a first-degree risk factor, being over 50 years old.
- Diagnosis of breast cancer in a first-degree relative, such as a mother or sister.
- Having never given birth or never breastfed.
- Having had the first birth after the age of 30.
- Early menstruation (for example, before age 12) Menopause after age 55 (late menopause) Taking postmenopausal hormone therapy.
- Using birth control pills for a long time before the first delivery.
- Gaining excess weight.
- Alcohol and cigarette use.
- Radiotherapy treatment at a young age (for example, before the age of 15) Previous cancer in a breast.
- Low fat percentage in breast tissue.
- Carrying the breast cancer gene (BRCA).



