Selenium is critically essential to the defense against oxidative stress and to thyroid hormone metabolism. Soil concentrations cause so much variability, however, in the selenium content of foods that any two of us could be eating the same diet and one of us could have too little selenium and the other too much. That makes it essential to understand how to measure and manage our nutritional status. In episode 35, I continue the series on managing nutritional status by teaching you how to do just that.
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