Correction: Selenium – Essential Comments on an Essential Nutrient
In my article “Adrenal Fatigue; Does it Exist?” which appeared in the Townsend Letter Issue #449 (December 2020), on page 40 there is an erroneous comment: “The only known enzyme function of selenium involves glutathione peroxidase.” This comment is incomplete and misleading; it should have read: “Selenium is involved with the enzymes of thyroid metabolism, the enzymes of glutathione metabolism, and the enzymes of other multiple ancillary enzyme systems.” The complexity and broad scope of this subject of selenium metabolism and its involvements is well beyond this allotted space.
For the reader who is interested in more on this broad and fascinating subject of selenium, it is suggested that he/she read the excellent review article: Fairweather-Tait SJ et al Selenium in human health and disease. Antioxidants and Redox Signaling vol 14 No. 7, 2011 (Mary Ann Liebert Inc, Publishers). Reader, please note that, in addition to the fine comprehensive text, this article’s bibliography is a treasure trove of enlightenment gems.
Alfred V. Zamm, MD










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