Anette Hjartåker, PhD, Researcher in the Department of Biostatistics in the Institute of Basic Medical Sciences at the University of Oslo, et al., in their study "Childhood and Adult Milk Consumption and Risk of Premenopausal Breast Cancer in a Cohort of 48,844 Women - the Norwegian Women and Cancer Study," published June 16, 2001 in the International Journal of Cancer, wrote:

“When combining milk consumption as a child and as an adult we observed a clear negative trend in premenopausal breast cancer incidence rate with increasing milk consumption… Compared with women who reported no or low consumption of milk on both occasions, women with moderate milk consumption had a reduced incidence rate of breast cancer of about 25%, whereas women with a high milk consumption on both occasions had a reduced incidence rate of about 50%.”

June 16, 2001