Food & Drink

Mayo Clinic study links dairy to Prostate Cancer

  • Last Updated:
  • Oct 23rd, 2019 5:55 am
Deal Fanatic
Aug 5, 2006
6009 posts
Global Village

Mayo Clinic study links dairy to Prostate Cancer

Well, that does it, no more dairy for me. ... sk-1466662

"Our review highlighted a cause for concern with high consumption of dairy products," says John Shin, MD, a Mayo Clinic oncologist and lead author on this study. "The findings also support a growing body of evidence on the potential benefits of plant-based diets."

The researchers reviewed 47 studies published since 2006, comprising more than 1,000,000 total participants, to better understand the risks of prostate cancer associated with plant- and animal-based foods. While patterns of association emerged, Dr. Shin says more investigation is needed to understand the nature and strength of those associations.
All day I dream about sports
4 replies
Deal Fanatic
May 14, 2009
6472 posts
Why cut out dairy? This isn’t even saying that dairy consumption causes prostate cancer.
Our study had a number of limitations. First, despite the broad search and detailed method of data extraction, we did not include a meta-analysis with our systematic review because the significant heterogeneity found among the studies preclude meaningful quantitative analysis. Not only were several types of studies included (eg, systematic reviews, prospective cohorts, and case-control studies), but there was also significant heterogeneity within each subset. Second, epidemiologic data cannot prove causation, so any change in risk for PCa is by association and subject to confounding factors. For instance, people who follow more prudent diets are also less likely to smoke or drink alcohol and more likely to exercise. As with most observational nutrition studies, the presented data were primarily collected by dietary recall, which has inherent flaws. The effect of diet on PCa is also difficult to study because of the inherent indolence of the disease and variability in staging. Some of the studies looked at PCa incidence, whereas others looked at PCa mortality. Very few studies47 tried to determine associations of diet with more aggressive forms of PCa. Even if more studies had looked at this factor, we would likely find the definition of aggressive cancer to be variable as well.
Future Research
One of the biggest obstacles in the field of dietary research is the lack of standardized methods for capturing and reporting diet and lifestyle data. However, despite the heterogeneity in methods and discordant conclusions found in the literature, our review shows that, in general, plant-based foods may be associated with a decreased risk of PCa, whereas dairy products may be associated with an increased risk of PCa. It would be helpful to test the validity of these findings through more randomized controlled trials such as the one conducted by Ornish et al.25 There is also a need to better understand the possible effect of nondietary lifestyle factors, such as smoking and exercise, on PCa risk so that future dietary studies can better control for these factors.
Our review of the literature suggests that consumption of higher amounts of plant-based foods may be associated with decreased PCa risk, and the consumption of higher amounts of dairy products may be associated with increased PCa risk. There does not appear to be a clear association between increased PCa risk and increased consumption of other types of animal-based foods, including red, white, or processed meat, fish, and eggs.
Deal Expert
Aug 22, 2006
27311 posts
TIL that the Mayo Clinic pulled a buzzfeed and clickbaited us.
Deal Expert
Dec 4, 2010
19219 posts
Quarantine Bubble
I don’t even need to read it but it does make sense. Increased level of hormones in a biological organisms will always lead to some aberrant growth, both the good and bad kind. It’s a catch 22.

Someone should put out a study saying we will eventually succumb to old age so live live to the fullest.
Deal Addict
Jul 23, 2007
4368 posts
I've certainly seen nothing over the years to suggest that dairy is protective from any cancer, let alone prostate.