Is collagen a Fibre or fiber? Unpacking the Protein's Structure
                                
                                
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                                    4 min read                                
                            
                                Collagen is the most abundant protein in mammals, making up 25% to 35% of total protein content. The question, "Is collagen a Fibre or fiber?" can be confusing, as it is neither a dietary fiber nor a single protein, but rather the building block for the strong, structural collagen fibers found throughout the body.