A nurse is reinforcing education to clients about breast cancer at a community health event. Which of the following statements should the nurse include in the training?
a. Clients who have BRCA1 or BRCA2 gene changes have a decreased risk of breast cancer.
b. Breastfeeding increases the risk of breast cancer in women over 40 years of age.
c. Clients should begin screening mammography annually by the age of 30 years old.
d. Breast cancer can occur in any part of the breast, but ductal breast cancer is most common.