A look at the EU-reviewed claim on manganese and a byproduct that forms in practically every cell — with source references and the full wording of the regulation.
Go to the Guide →Nearly every cell in the body gets most of its energy by continuously putting oxygen to use. This process is reliable but not perfectly sealed: a tiny share of the molecules involved take a chemical detour and leave the process in a more reactive form, instead of reaching their intended destination.
In scientific terms, this is called oxidative stress: it sets in once these reactive byproducts form faster, over an extended period, than the cell's own systems can neutralize them. This is exactly where a claim comes in — one that the European Union reviewed and authorized for manganese.
Jadeitia brings together the scientific background: where the byproduct comes from, where manganese shows up as a cofactor, and exactly what the regulation states, word for word.
Manganese is part of an enzyme found exclusively inside the mitochondria — the cell structures that process most of the oxygen a cell uses. There, it converts a reactive byproduct into a markedly less reactive form.
Compared with other minerals, the body stores only a tiny amount of manganese. Most of it sits in the liver, pancreas, and bone, with very little circulating freely in the blood.
Whole grains, oats, nuts, legumes, and black tea are among the foods with a notable manganese content. The EU reference value for daily intake is 2 mg.
The enzyme in question is known in the scientific literature by the short name SOD2. It belongs to the larger group of superoxide dismutases, but differs from its copper- and zinc-dependent relatives in the cell plasma in both location and the metal at its catalytic center: a single manganese ion, without which the conversion reaction would proceed only very slowly.
If this ion is missing or only insufficiently available, the reactive byproduct builds up right where it first forms. This exact connection is the scientific basis for the claim quoted above, reviewed by EFSA, stating that manganese contributes to the protection of cells from oxidative stress — EU-authorized wording · Regulation (EU) No 432/2012.
Manganese is not the only trace element mentioned in connection with reactive oxygen compounds. Zinc, copper, and selenium also have their own, independently reviewed EU claims in the same field. Each of these claims, though, refers only to the specific mineral it names — none of them describes a combined or amplified effect from taking several minerals together.
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The Guide expands on every point raised here: where the byproduct comes from, how SOD2 works, a food table, and the complete regulation text, available for as long as you like.
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