Are the Effects of Ochratoxin Concerning?

The overall cost-benefit ratio for mycotoxins depends on which food is contaminated.

Ochratoxin has been described as toxic to the immune system, developing fetus, kidneys, and nervous system, as well as being carcinogenic, but that is in animal studies. Ochratoxin “causes kidney toxicity in certain animal species, but there is little documented evidence of adverse effects in humans.” That’s why it’s only considered a possible human carcinogen.

Big Ag assures that current ochratoxin levels are safe, even among those who eat a lot of contaminated foods. The worst-case scenario may be young children eating a lot of oat-based cereals, but, even then, “their lifetime cancer risk is negligible.” Individuals arguing against regulatory standards suggest we can eat more than 42 cups of oatmeal a day and not worry about it. Where do they get these kinds of estimates?

They determine the so-called benchmark dose in animals—the dose of the toxin that gives a 10% increase in pathology—then, because one would want to err on the side of caution, divide that dose by 500 as a kind of safety fudge factor to develop the tolerable daily intake. For cancer risk, you can find the tumor dose—the dose that increases tumor incidence in lab animals by 5%—and extrapolate down to the ”negligible cancer risk intake,” effectively incorporating a 5,000-fold safety factor, as seen below and at 1:28 in my video Should We Be Concerned About the Effects of Ochratoxin?.

It seems kind of arbitrary, right? But what else are you going to do? You can’t just intentionally feed people the stuff and see what happens—but people eat it regularly. Can we just follow people and their diets over time and see if those who eat more whole grains, like oats, for example, are more likely to have cancer or live shorter lives?

What is the association between whole grain intake and all-cause, cardiovascular, and cancer mortality? Every additional ounce of whole grains eaten a day is associated with not only a lower risk for cancer mortality but also a lower risk of dying from all causes put together. Below and at 2:05 in my video are findings from all the big cancer studies. Every single one trended towards lower cancer risk.

The bottom line is that you don’t find adverse effects confirmed in these population studies. This is not to say ochratoxin is necessarily harmless, but “any such risk does not outweigh the known benefits of wholegrain consumption.” In fact, healthy constituents of the whole grains themselves, like their antioxidants, may directly reduce the impacts of mycotoxins by protecting cells from damage. So, eating lots of fruits and vegetables may also help. Either way, “an overall healthy diet can play a significant role in mitigating the risk of contaminants in grain.”

In summary, healthy foods like whole grains are good, but just not as good as they could be because of ochratoxin, whereas less healthful foods, like wine and pork, are worse because of the mycotoxin, as shown below and at 2:52 in my video. Ochratoxin was detected, for example, in 44% of tested pork.

Doctor’s Note

This is the third video in a four-part series on mold toxins. If you missed the first two, see Ochratoxin in Breakfast Cereals and Friday Favorites: Ochratoxin and Breakfast Cereals, Herbs, Spices, and Wine.

Should We Be Concerned About Aflatoxin? is coming up next.



from NutritionFacts.org https://nutritionfacts.org/blog/are-the-effects-of-ochratoxin-concerning/
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