Collagen is an animal protein found in foods like bone broth, and the body builds its own from a balanced diet. This guide covers collagen-rich foods and the vitamin C cofactor that supports your own collagen formation.
Can You Get Collagen From Food?
Yes - collagen is an animal protein, so it is naturally present in certain foods, and the body also makes its own collagen from the amino acids in a balanced diet. There are really two dietary angles worth understanding. The first is foods that contain collagen directly, such as bone broth and the connective parts of meat and fish. The second, arguably more important, is foods that supply the nutrients the body needs to form its own collagen, with vitamin C foremost among them. This guide covers both, framed around everyday eating rather than any medical promise.
Bone Broth and Slow-Cooked Cuts
Bone broth is the food most associated with dietary collagen. Simmering animal bones, skin and connective tissue for many hours dissolves their collagen into the liquid as gelatine, which is simply collagen that has been partly broken down by heat. Slow-cooked cuts rich in connective tissue - such as shin, oxtail, brisket and chicken with skin and bones - are similar sources. The collagen content of homemade broth varies a great deal depending on the bones used and the cooking time, so it is best thought of as a nourishing, traditional food rather than a precisely dosed source.
Other Collagen-Rich Foods
Beyond broth, collagen is concentrated in the parts of animals where connective tissue sits: the skin of chicken and fish, fish with edible skin and bones, slow-cooked tougher cuts of beef and pork, and gelatine itself (the basis of some traditional puddings and jellies). Fish skin and scales are the source of marine collagen, while cattle provide bovine collagen. Eating a varied range of these foods contributes collagen and its constituent amino acids - chiefly glycine, proline and hydroxyproline - to the diet. As always, this is general nutrition information, not a health claim.
Foods That Support Your Own Collagen
Arguably more useful than eating collagen is giving your body what it needs to make its own. Vitamin C is essential here: vitamin C contributes to normal collagen formation for the normal function of skin, and it is the one authorised claim relevant to this area. Vitamin-C-rich foods include citrus fruits, kiwi, strawberries, blackcurrants, peppers, broccoli and leafy greens. Adequate protein supplies the amino acid building blocks, while foods containing zinc and copper - such as shellfish, nuts, seeds and wholegrains - provide trace minerals involved in connective tissue. A varied diet generally covers all of these.
What About Plant-Based Diets?
Collagen is found only in animal tissues, so there is no true plant-based collagen food. However, those following a vegetarian or vegan diet can still support the body's own collagen formation by ensuring plenty of vitamin C from fruit and vegetables, adequate protein from pulses, soya, nuts and grains, and trace minerals such as zinc and copper. Products marketed as vegan collagen typically provide these supporting nutrients rather than collagen itself. A well-planned plant-based diet can comfortably supply the raw materials the body uses.
Food, Supplements and a Sensible View
Food sources of collagen and the nutrients that support its formation are a sound foundation, and a balanced diet should always come first. Collagen supplements offer a convenient, consistent, hydrolysed form that some people prefer for routine use, but they are food supplements rather than medicines and are not a substitute for good eating. Whether you favour broth, collagen-rich meals, plenty of vitamin C or a supplement, the principles are the same: variety, consistency and realistic expectations, since results vary from person to person. Any specific dietary or health concern is best discussed with a GP or registered dietitian.