Walk into any gym or health food shop today and it's impossible to miss the explosion of protein products. From powders, shakes, bars and also regularly added to yoghurts and coffees, protein has become one of the biggest wellness trends of the last decade.
But alongside traditional protein supplements, collagen has also grown in popularity. This naturally leads us to the question-
"Is collagen just another protein supplement?"
The answer is both yes and no.
Collagen is a protein, but it has a very different role in the body compared with the protein that is found in the powders or bars many people use after exercise. Understanding that difference can help you decide whether collagen deserves a place in your daily routine.
Is Collagen a Protein?
Yes.
In fact, collagen is the most abundant protein in the human body, accounting for around 30% of all the protein we contain.
Rather than being used primarily for building muscle, collagen acts as the body's structural framework. It's found throughout your:
- Skin
- Tendons
- Ligaments
- Cartilage
- Bones
- Blood vessels
- Connective tissues
As my partners say this is my favourite line-think of collagen as the body's natural scaffolding, it provides strength, flexibility and support to the tissues that keep us moving and functioning every day.
- Fish
- Poultry
- Eggs
- Dairy
- Pulses
- Lean meats
Collagen works best as part of an overall healthy diet, not instead of one.
Who May Benefit from Taking Collagen?
While collagen isn't essential for everyone, many people choose to supplement because our natural collagen production gradually declines from our mid-twenties onwards.
This natural decline contributes to changes we commonly notice with age, including:
- Fine lines and wrinkles
- Reduced skin elasticity
- Joint stiffness
- Slower recovery from exercise
- Changes in tendon resilience
For active adults, regular exercisers and those wanting to support healthy ageing, collagen can be a useful addition to a balanced lifestyle.
My Advice as a GP
One thing I encourage patients to remember is that wellness doesn't have to be about choosing one product over another.
Nutrition isn't about finding a miracle supplement, it's about understanding what each nutrient actually does.
Protein remains incredibly important for maintaining muscle mass, particularly as we age.
Collagen, meanwhile, offers targeted support for the connective tissues that allow us to stay active, mobile and resilient.
Rather than asking whether collagen is better than protein, the more useful question is:
"What am I trying to support?"
If it's muscle growth, focus on meeting your overall protein requirements.
If it's healthy skin, joints, tendons and connective tissue, collagen has an important role to play.
For many people, the answer isn't collagen or protein, it's understanding how the two work together as part of a healthy lifestyle.
In Summary
Collagen is a protein, but it's a specialised one.
Traditional protein supplements are excellent for supporting muscle growth and recovery, while collagen provides the building blocks that help maintain the connective tissues holding everything together.
As our understanding of nutrition evolves, we're moving away from thinking about supplements as competitors. Instead, it's about choosing the right tool for the right job.
Combined with regular exercise, a balanced diet, good sleep and healthy lifestyle habits, collagen can form part of a well-rounded approach to ensuring adequate protein intake and supporting your health for years to come.
Dr B is a practising GP with a special interest in preventative health and lifestyle medicine.