Problem: According to the American Cancer Society (2017) and McTiernan et al. (2003), which of the following is true of the risk of breast cancer in middle-age women? The vast majority of breast cancer cases are thought to be hereditary, resulting from inherited mutations. Weight loss, especially after menopause, increases women's risk of breast cancer. Those who experience early menarche and late menopause have a greater risk of breast cancer than do others. Women who have no children or did not breast-feed have a lower risk of breast cancer than do others.