https://wiki.tiffa.net/w/index.php?action=history&feed=atom&title=Translations%3AMineral_%28nutrient%29%2F18%2Fen 2026-11-02T07:52:50Z Revision history for this page on the wiki MediaWiki 1.43.0 https://wiki.tiffa.net/w/index.php?title=Translations:Mineral_(nutrient)/18/en&diff=108963&oldid=prev 2024-01-15T10:24:03Z

<p>Importing a new version from external source</p> <p><b>New page</b></p><div>==Elements considered possibly essential for humans but not confirmed==<br /> Many [[ultratrace element]]s have been suggested as essential, but such claims have usually not been confirmed. Definitive evidence for efficacy comes from the characterization of a biomolecule containing the element with an identifiable and testable function. One problem with identifying efficacy is that some elements are innocuous at low concentrations and are pervasive (examples: [[silicon]] and [[nickel]] in solid and dust), so proof of efficacy is lacking because deficiencies are difficult to reproduce. Ultratrace elements of some minerals such as silicon and [[boron]] are known to have a role but the exact biochemical nature is unknown, and others such as [[arsenic]] are suspected to have a role in health, but with weaker evidence. In particular, trace arsenic seems to have a positive effect on some organisms, but so does [[lead]], showcasing the uncertainty behind whether some trace elements are truly essential. [[Strontium]] is tolerated and is a component of some drugs, but it is not essential, only beneficial. Non-essential elements can sometimes appear in the body when they are chemically similar to essential elements (e.g. Rb&lt;sup&gt;+&lt;/sup&gt; and Cs&lt;sup&gt;+&lt;/sup&gt; replacing Na&lt;sup&gt;+&lt;/sup&gt;), so that essentiality is not the same thing as uptake by a biological system.</div>

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