We already know that dairy food is one of the most consistent dietary predictors for prostate cancer in the published literature. What about women? Here’s a new study that found the more milk African-American women consumed, the greater their risk of ovarian cancer:
1. Dairy, Calcium, Vitamin D And Ovarian Cancer Risk In African–American Women, British Journal of Cancer, Online 15 September 2016
An increased ovarian cancer risk was observed for whole milk consumption and lactose intake.
The Dairy Council is powerful in the US. The results of this study, even if they do make it to prime time, will be tempered by something like:
“Basically the picture is far from clear, and women would really be doing a great disservice to their diet if they took dairy out of it because of this,” American Dairy Council spokeswoman Deanna Rose, RD, tells WebMD.
That Dairy Council quote on WebMD was referring to this older study from 12 years ago where 60,000 women were followed for 13.5 years. It also found dairy food increased the risk for ovarian cancer:
2. Milk And Lactose Intakes And Ovarian Cancer Risk In The Swedish Mammography Cohort, American Journal of Clinical Nutrition, November 2004
Conclusions: Our data indicate that high intakes of lactose and dairy products, particularly milk, are associated with an increased risk of serous ovarian cancer.
These studies are not isolated. Here’s the Iowa Women’s Study that followed 29,000 women for a decade and found the same risks from consuming dairy. (They also found that eggs increased ovarian cancer risk.)
3. Prospective Study of Diet and Ovarian Cancer, American Journal of Epidemiology, 1999
Here’s a Harvard study of 80,000 followed for 16 years showing the same thing. Those who consumed the most dairy doubled their risk of developing ovarian cancer.
4. A Prospective Study Of Dietary Lactose And Ovarian Cancer, International Journal of Cancer, February 2004.
I’ve just listed 4 large studies, published in peer-reviewed journals over a period of 17 years (1999 to 2016), that indicate dairy foods increase the risk for ovarian cancer. That is clearly not a body of evidence that would support continued consumption of dairy food.