Protective Factors Against Breast Cancer Development: A Retrospective Study on Breastfeeding and Fertility

Objective: Breast cancer (BC) is the most common type of cancer among women.Various risk and protective factors play a role in its development.This study evaluates the association between parity, breastfeeding, and age at BC diagnosis among women with BC.Methods: Between January 2016 and December 2023, data from follow-up records of 1,014 patients diagnosed with BC and admitted to our hospital's radiation oncology clinic for radiotherapy treatment were analyzed.The collected data were statistically analyzed using Microsoft Access and SPSS 25.0.Results: When patients with BC were grouped into those under and over the age of 55, a significant association was found between parity and later age at BC diagnosis (odds ratio: 2.02, 95% confidence interval: 1.29-3.16;p