Breast cancer is the most common cause of cancer death among women and it is one of the leading causes of death among women. Factors that appear to be implicated in decreasing the risk of breast cancer are regular breast examinations by health care professionals, regular mammograms, self-examination of breasts, healthy diet, and exercise to decrease excess body fat, and breastfeeding.
Source: “Reducing cancer risk by enabling women to breastfeed,” by Alison Stuebe, American Association for Cancer Research, May 2017, https://cebp.aacrjournals.org/content/26/5_Supplement/IA23