Friday, July 12, 2013
In the same study that showed an association with elevated prostate cancer risk with a higher omega 3 fatty acid level in the blood found that those with more linoleic acid had a decreased risk of low grade and all types prostate cancer. Gamma linoleic acid is very important in preventing inflammation, an important pathway of carcinogenesis. It is always a good idea to take EPA/DHA fish oil supplements with EPO Evening Primrose Oil supplements.
The report that an average 2.5% increase in omega 3 fatty acids was found in the blood of men that developed prostate cancer versus those that did not has produced a great deal of comment in the media. I plan to read the article. But before everyone makes assumptions it is helpful to recognize that this study did not actually investigate whether the men with prostate cancer ate more fish or even took any fish oil supplements. Nor did they look at 25- OH vitamin D 3 levels which would have given a possible indication of exposure to free cadmium, a known cause of prostate cancer. Elevations of substances in the blood do not necessarily mean elevated exposure. It can also mean a change in metabolism. In a study of mercury, pregnant women with elevated blood mercury had worse outcomes but women who ate the most fish, an important source of mercury exposure had the best outcome. Blood lead levels correlate with toxic effects with no threshold but removing lead from gasoline and the subsequent drop in blood lead levels has led to no improvements in health . On the contrary, it has allowed for increased toxicity from ambient cadmium air pollution in conjunction with the other chemicals, metals, viruses, bacteria, fungi, and parasites.