Cofactors of collagen formation: what the label states

Evidence status M3: Certain enzymes in the body modify collagen precursors chemically before a stable fibre can form from them. Such enzymes need helper substances for this, called cofactors in biochemistry. Myllyharju and Kivirikko (2004), Trends in Genetics describe these enzymes and the consequences of mutations in the corresponding genes. The limit belonging to this source: the work describes enzyme biochemistry inside the body and not the effect of an intake from outside; nothing follows from it about what taking a substance does in a person. How collagen is built as a structure is set out by collagen as structure in connective tissue.

Evidence status M3: That a substance takes part in a process in the body describes that process. It says nothing about whether an additional intake changes anything in a particular person. Between those two statements lies an investigation that would have to exist for this question: with a population, a comparison group, a duration and a pre-specified endpoint. This article does not jump over that gap. The structural background is given by Shoulders and Raines (2009), Annual Review of Biochemistry. Limit: structural biology on the body's own tissue, with no product and no amount reference.

Legal frame, not applied to a product here: An authorised claim is always tied to a particular nutrient and bound to conditions on amount and portion. It holds for a specific product only once that product's composition, portion size and use are available in verified form. This article names that condition explicitly and applies no such claim to a product, because the verified product, portion, amount and use details required for it are not available here. The placing of these terms as a whole is done by the guide to labels and terms around collagen.

Evidence status M3: Readable items are the product designation, the ingredient list in descending order, the details per portion and the manufacturer's recommended use. These details can be followed with the pack in hand. What they mean for an individual person is not stated there and cannot be derived from them either. Which forms exist and which attributes are ascribed to each is compared by comparing forms and label details.

Evidence status N: Whether a particular combination of collagen and accompanying substances makes a difference in a particular person is not evidenced here and is not asserted. The question stays visibly open instead of being answered with a description of a mechanism. Which nutrients are discussed in connection with the body's own formation is treated as a subject of its own by nutrients around the body's own collagen formation.