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From kólla to modern biology —
the long history of collagen,
and the dietary tradition that pre-dates it.
The word collagen comes from the Greek kólla, meaning glue. For most of human history, before anyone knew what a triple helix was, collagen was known by what it produced: the gelatinous broths and stocks that resulted when bone, hide, and cartilage were simmered for hours. The molecular biology arrived only in the twentieth century. The dietary tradition is far older — and the modern formulation language is, in essence, that tradition reorganised by what the chemistry now reveals.
I
Kólla — the Greek word for glue —
and the food tradition the word names.
The English word collagen, like the French collagène and the German Kollagen, descends from the ancient Greek kólla, which simply meant glue. The naming was descriptive rather than scientific. When ancient cooks boiled bones, hides, tendons, and cartilage in water for long periods, what they produced was a viscous, sticky liquid that solidified into a gel as it cooled. The gel held together. It could be used as a binding agent in food preparations, as a thickener in stocks and soups, and — once dried — as an adhesive in carpentry and bookbinding. The substance that emerged from these long simmerings was given a name that captured what it did: glue.
The connective tissues that produce this gel are, of course, rich in what the modern era now calls collagen. The heat of long simmering partially denatures the triple-helix architecture of the source collagen, unwinding the rope into long, soluble chains that, when cooled, hydrogen-bond loosely to one another and form the gel network that gives gelatin its characteristic texture. This is the same process described in the previous article in this series — except that it was happening, in the form of bone broth and aspic and gelatin desserts, for centuries before anyone had the chemistry to describe it. The dietary preparation came first; the molecular explanation arrived much later.
What is striking about this history is how widely the practice was distributed. Bone broth in some form appears across virtually every traditional cuisine — Chinese, Japanese, Korean, Vietnamese, Mediterranean, Eastern European, French, English, West African, indigenous North American, Andean. The specifics differ — the source animal, the seasoning, the duration of cooking, the final preparation — but the underlying technique is essentially the same. A connective-tissue-rich source is simmered for hours, the collagen is partially hydrolysed by the heat, and what results is a nutritionally distinct liquid that has long been valued as a foundation of nourishing cuisine. The collagen family that modern biology has now characterised was, in dietary form, already a culinary tradition.
Long before anyone knew what a triple helix was,
they knew what a bone broth was.
The dietary tradition pre-dates
the molecular biology by millennia.
The Long Timeline — Collagen Through History
Four turning points in how collagen has been known —
from culinary substance to molecular protein.
The modern understanding of collagen as a molecular protein family is a twentieth-century arrival. The dietary tradition is far older. The four turning points below trace the path from ancient kitchen practice through the gradual scientific characterisation of what bone broth had been producing all along.
Era 01
Antiquity
Bone broth as cuisine
In the ancient world, bone broth and aspic preparations appear across nearly every documented cuisine. The Greeks named the resulting substance kólla — glue — for its binding and gelling properties. Roman kitchens, Chinese culinary traditions, and the cuisines of essentially every long-running civilisation included connective-tissue simmerings in some form. The substance was valued as a foundation of restorative cuisine, though the underlying biology was entirely unknown.
Era 02
1800s
Gelatin chemistry
In the nineteenth century, gelatin became one of the first proteins to be systematically isolated and chemically characterised. Researchers identified that the substance produced from long-simmered connective tissue was a protein with a distinctive composition — particularly rich in glycine and proline, and containing a then-mysterious amino acid that would later be identified as hydroxyproline. The molecular structure remained obscure, but the existence of a defined protein family was established.
Era 03
Mid-1900s
The triple helix discovered
In the 1950s, the triple-helix structure of collagen was characterised — using X-ray diffraction techniques pioneered for studying DNA and protein structures generally. The work showed that collagen was not a folded globular protein like the enzymes and antibodies that had been the focus of most protein chemistry, but a long rope-like molecule built from three intertwined chains. This was the moment collagen became, biologically, what the modern era now understands it as.
Era 04
Late 20th–21st c.
The 28-type family
Through the late twentieth and early twenty-first centuries, the full extent of the collagen family was gradually characterised. New types were added to the catalogue roughly each decade, expanding the recognised family from the original three types known in the 1950s to the twenty-eight types catalogued today. The same period saw the gradual development of hydrolysed collagen formulations — taking the ancient bone broth tradition into a modern peptide format.
II
The continuity between tradition and formulation —
bone broth and hydrolysed peptides
as expressions of the same biology.
What is sometimes missed about contemporary collagen formulations is that they sit in unbroken continuity with the dietary tradition that produced bone broth. A hydrolysed multi-collagen peptide preparation is, biochemically, a more concentrated and standardised version of what a long-simmered bone broth supplies. The source tissue is broadly similar — connective tissue, with its characteristic Types I, II, III, V, and X content. The processing is broadly similar — heat-based partial denaturation, followed in the modern case by enzymatic hydrolysis where the traditional preparation relied on hours of simmering. The end result, in terms of amino acid profile, is broadly similar — glycine-, proline-, and hydroxyproline-rich, in the proportions characteristic of the collagen family.
The differences are in concentration and consistency. A bone broth supplies amino acids in dilute form, mixed with water, minerals, and whatever else was in the source tissue. A hydrolysed collagen powder supplies the same amino acid profile in a concentrated, dry, standardised form, with a measured quantity of collagen-derived peptides in each scoop. The convenience is substantial — a daily serving fits into coffee or water without the four-hour simmering and the storage challenges of stock. The underlying biology is the same.
This continuity is, in some sense, the strongest argument for collagen as a dietary input. It is not a novel substance that the body has never encountered. It is a structural protein that the body's connective tissues are themselves built from, supplied in a form — bone broth, gelatin, hydrolysed peptides — that human dietary traditions have used for centuries. Codeage's Multi Collagen Protein Powder, drawing on five collagen types from four sources, is a contemporary expression of an old idea: that the body builds itself partly from what it eats, and that supplying it with concentrated structural-protein substrate has been valued, in different forms, for as long as cooking has existed.
The kitchen and the laboratory arrived at the same answer
by different routes.
The kitchen got there first by several thousand years.
The history of collagen in numbers
A protein family known by what it produced,
long before it was known by what it was.
Antiquity
Earliest documented use of bone broth and gelatin preparations — pre-dating any chemistry or molecular biology of collagen by thousands of years
Bone broth and gelatin appear across essentially every long-running cuisine, with documented use in ancient Mediterranean, Chinese, and Mesopotamian culinary traditions. The dietary recognition that long-simmered connective tissue produced a nutritionally distinct preparation pre-dates the molecular biology of collagen by a span of time that exceeds the entire history of formal chemistry.
1950s
Decade in which the triple-helix structure of collagen was first characterised — using X-ray diffraction techniques developed for protein crystallography
The triple-helix model of collagen emerged in the 1950s, contemporaneous with the characterisation of the DNA double helix and the broader rise of structural biology. Several research groups contributed to the model, and the basic geometry has held up across subsequent decades of refinement. The recognition that collagen was a triple-stranded rope rather than a folded globule was a foundational moment in twentieth-century protein chemistry.
28
Collagen types catalogued in the human body to date — the result of half a century of progressive characterisation since the original three were identified
The family catalogue grew from three known types in the 1950s to twenty-eight types today, with new members added gradually as molecular biology techniques allowed identification of the more specialised and less abundant collagens. The catalogue is generally regarded as complete, though characterisation of the lesser-studied types — particularly their precise tissue distributions and structural roles — continues to be refined.
III
What the history tells us
about how to think about collagen today.
The long history of collagen as a dietary tradition reframes the question of what modern collagen formulations are. They are not a novel intervention. They are a concentration and standardisation of a culinary practice that has been part of human food culture for millennia. The molecular biology that the twentieth century arrived at simply explains, in chemical terms, what the bone broth tradition had been supplying all along — a particular protein family, with a distinctive amino acid profile, derived from connective tissue, in a form the body's own connective tissues can use as structural substrate.
This framing matters because it positions multi-collagen formulations within a continuous tradition rather than as a recent invention. The convenience format — a powder that dissolves in a beverage rather than a broth that requires hours of simmering — is the contemporary contribution. The underlying biology is the same as it has been since the first time a human cook simmered bone for a few hours and noticed the resulting broth gelled. A multi-collagen formulation brings together the source tissues that a bone-broth tradition has historically combined — bovine, marine, poultry — and adds eggshell membrane, another dietary collagen source with long-standing traditional use, in a standardised peptide format suitable for daily use.
This is, in essence, the history that arrives at the present. The collagen family of twenty-eight types is the modern molecular characterisation. The multi-collagen formulation is the modern dietary expression. The continuity between them — and between both and the kólla tradition that gave collagen its name — is what makes the contemporary formulation legible as a continuation rather than as an invention. Studies referenced were conducted independently and did not involve any specific Codeage product. With this article, the foundational cluster of the Multi-Collagen series closes — the next clusters will turn to the cellular biology of collagen production, the body systems most heavily collagen-dependent, and the specifics of how collagen sits within the wider Codeage architecture. For the system context, The Longevity Code situates the multi-collagen family within the four-pillar daily framework that organises Codeage's approach to structural integrity over time.
Codeage · Structural Integrity · Pillar 02
A multi-collagen architecture,
built around the family.
Three formulations from the Codeage collagen line — each a contemporary expression of a long dietary tradition.
Multi Collagen Protein Powder
Five collagen types — I, II, III, V, X — drawn from four sources: grass-fed bovine, wild-caught marine, chicken cartilage, and eggshell membrane. Unflavoured. Mixes into water, coffee, or smoothies. The flagship of the Codeage collagen architecture.
View Product →Multi Collagen Beauty Night
An evening multi-collagen formulation combining the five-type collagen profile with botanicals chosen for the evening protocol. Designed to be taken in the hours before sleep.
View Product →Wild Caught Marine Collagen Peptides
Wild-caught marine collagen peptides — Type I in its marine molecular form, hydrolysed for solubility. A single-source collagen complement to the multi-collagen line for those building a layered architecture.
View Product →Previously in the Multi-Collagen series
Multi-collagen and single-source — the formulation logic behind combining types.
Codeage · The Longevity Code
A system built for
the structural long view.
The Longevity Code is a four-pillar daily system — every formulation mapped to a specific dimension of how the body sustains itself across time. Multi-collagen is the structural protein of Pillar 02.
Explore The Longevity Code →
