Skim Milk Causes Cancer
It seems those that switched from whole- to skim or low fat milk for health reasons have increased their cancer risk.
The amount of calcium and vitamin D in the diet appears to have little or no impact on the risk of prostate cancer, but the consumption of low-fat or nonfat milk may increase the risk of the malignancy, according to the results of two studies published in the American Journal of Epidemiology.
Dietary calcium and dairy products have been thought to increase the risk of prostate cancer by affecting vitamin D metabolism. Data from several prospective studies have supported an association, but many other studies have failed to establish a link.
In an overall analysis of food groups, the consumption of dairy products and milk were not associated with prostate cancer risk, the authors found. Further analysis, however, suggested that low-fat or nonfat milk did increase the risk of localized tumors or non-aggressive tumors, while whole milk decreased this risk.
The rationale for the linkage is not given in the report. Indeed, unless there’s something in the extraction process that alters the chemical makeup of the milk, it’s hard to imagine why removing milkfat would increase the risk of prostate cancer.
Of course, risks don’t occur in a vacuum. Presumably, switching to whole milk would increase one’s risk of high cholesterol, heart disease, and other health problems. The comparative odds would therefore be instructive in this situation.