Breast cancer patients should avoid high-fat dairy
Women who have had breast cancer can improve their chances of survival if they avoid high-fat dairy products, according to a study from Kaiser Permanente. The research found that women who consumed one serving a day of high-fat dairy products had higher breast cancer mortality, as well as higher all-cause mortality rates.
The investigators analyzed a group of women who were diagnosed with early-stage, invasive breast cancer between 1997 and 2000. Most of the them (83 percent) were from Kaiser Permanente's Northern California region.
Women who consistently ate high-fat dairy products increased their risk of dying of breast cancer by 49 percent and increased risk of dying of any cause by 64 percent. By comparison, low-fat dairy products showed no correlation to breast cancer mortality or general risk of dying.
Many dairy products contain elevated estrogen levels. High exposure to estrogen may increase the likelihood of breast cancer, according to previous research.