Sai Yi Pan, MD, Senior Epidemiologist at the Public Health Agency of Canada, et al., stated in their Sep. 2004 paper "A Case-Control Study of Diet and the Risk of Ovarian Cancer" in Cancer Epidemiology Biomarkers and Prevention:

“We saw no evidence of any pattern of association of ovarian cancer risk with… any dairy product, including all milk, low-fat milk, low-fat and skim milk, cheese, and ice cream… Our study found that several dietary factors were associated with ovarian cancer risk… However, [our study] failed to find an association with any dairy products.”

Sep. 2004