What is Collagen: The Glue Holding Your Body Together

By Collagenx Research Team │ 3 min read

Think of your body like a building—strong and stable. But it’s not just bricks and beams keeping it together.


There’s an invisible glue holding every part in place, giving both strength and flexibility.


That glue is collagen—the protein that keeps your skin smooth, your bones strong, and your joints healthy.

*The metaphors used in this post are meant to simplify complex biological processes for easier understanding. While these analogies help illustrate key concepts, they are not all scientifically precise. The human body is far more intricate than any metaphor can fully capture. For more detailed and accurate explanations, please refer to scientific sources or consult healthcare professionals.

 

What is Collagen?

What is Collagen? you ask, It’s a fibrous protein found in your skin, bones, tendons, ligaments, and cartilage, and it serves as the main structural component of connective tissues. Without collagen, your body would lose its strength and flexibility, much like a building losing its support beams.


What is Collagen types, well there are 28 different types of collagen, but Types 1-4 are the most common and crucial for overall health. Each type plays a slightly different role in maintaining the strength, elasticity, and integrity of various body parts.

"Collagen is the most abundant protein in the human body, making up about 30% of its total protein content."

 

The Role of Collagen in Your Body

1. Skin Elasticity and Wrinkle Prevention

One of the primary functions of collagen is to keep your skin firm, smooth, and youthful. When you’re young, your skin has plenty of collagen, which gives it a plump and elastic appearance. However, as you age, what is collagen production slows, leading to wrinkles, fine lines, and sagging. 

Collagen works alongside elastin, another protein, to maintain skin elasticity. Together, they allow your skin to snap back into shape when stretched, helping it stay resilient and youthful. Maintaining collagen levels can reduce the signs of aging, making it a popular ingredient in skincare and anti-aging products.


2. Bone Strength

Bones are more than just rigid structures—they also contain collagen, which provides them with the flexibility needed to withstand everyday stresses. Collagen forms a matrix that helps bones remain strong while also preventing them from breaking easily.

Without enough collagen, bones become more brittle, increasing the risk of fractures and conditions like osteoporosis. What is Collagen can mean many things. That’s why maintaining healthy collagen levels is essential for bone health, especially as you age.


3. Joint and Cartilage Health

Collagen is a vital component of your joints and cartilage, acting like a cushion that helps your joints move smoothly. Think of collagen as the lubricant in your body that prevents friction between bones, allowing for smooth and painless movement.

What is collagen type 2? Well Type 2 collagen specifically helps protect your cartilage, which absorbs the shock from movement. As collagen production decreases, your cartilage can break down, leading to joint stiffness and conditions like arthritis. By boosting your collagen intake, you can support joint flexibility and reduce discomfort.
 

 

Further Readings

→ Whole Body Collagen: The Essential Building Block for a Strong and Youthful Body 

→ Everything you need to know about Collagen from a whole body perspective

 

Why Does Collagen Production Decline as We Age? 

As you age, your body’s natural collagen production decreases. This slowdown typically starts in your mid-20s and declines in your 30s and beyond. What is collagen and what factors that can contribute to collagen loss include:

  • Aging

  • UV radiation from the sun

  • Smoking

  • High sugar consumption

  • Stress

When collagen levels decline, the first signs often show up in your skin—wrinkles, fine lines, and a loss of firmness. Internally, this loss can affect your bones, joints, and even muscle strength.

Smiling elderly woman with short gray hair, wearing glasses, pearl earrings, a pearl necklace, and a light-colored blouse with a patterned design. She is outdoors, with a blurred green background, illustrating the effects of aging and raising the question, what is collagen?
 

"Collagen is the glue that holds all your lego blocks together to keep your body, or your building secure."

B.K.S Iyengar

 

How to Boost Collagen Naturally

While aging is inevitable, there are ways you can support your body’s collagen production to maintain your skin’s youthful appearance and keep your bones and joints strong.


1. Eat Collagen-Boosting Foods

One of the best ways to promote collagen production is through your diet. Certain foods can help your body produce more collagen, while others contain collagen itself. Consider incorporating these collagen-boosting foods into your meals:

  • Bone broth: A rich source of collagen from animal bones.

  • Egg whites: Contain glycine and proline, the amino acids needed for collagen production.

  • Citrus fruits: Rich in Vitamin C, which is essential for collagen synthesis.

  • Leafy greens: Full of antioxidants that protect collagen from damage.

  • Fish: Particularly fish skin, which is high in Type 1 collagen.



2. Take Collagen Supplements

If you’re not getting enough collagen from food sources, collagen supplements are another option. These come in powder, liquid, or capsule form and typically contain hydrolyzed collagen (collagen broken down into smaller, more easily absorbed pieces). Research suggests that taking collagen supplements can improve skin elasticity, support joint health, and strengthen bones.

Look for marine collagen, which is derived from fish. This is an excellent source of Type 1 collagen, the kind most beneficial for skin and bones.


3. Protect Your Skin from UV Damage

One of the fastest ways to break down collagen is through sun damage. The sun’s UV rays can penetrate your skin, causing collagen fibers to degrade. To preserve your skin’s collagen, always wear sunscreen when exposed to sunlight and consider wearing protective clothing when spending long periods outdoors.


Infographic showing collagen-boosting foods including cabbage, carrots, soy products, flax seeds, olives, tomatoes, avocado, fish, citrus fruits, green beans, white tea, turkey, garlic, eggs, chia seeds, dark green vegetables, oysters, and pumpkin seeds, explaining what is collagen and how these foods support its production.
 
Illustration comparing young and old skin, highlighting the effects of aging on skin texture and elasticity, with a focus on the role of collagen in maintaining skin health. The young skin appears smooth and firm, while the older skin shows wrinkles and sagging.
 

The Benefits of Supporting Collagen Production


 Maintaining healthy collagen levels provides a wide range of benefits for your body. Here’s why you should care about boosting your collagen:

  • Youthful, Elastic Skin: Reduced wrinkles, improved skin hydration, and a firmer appearance.

  • Strong Bones: Lower risk of fractures and better bone density.

  • Healthy Joints: Less joint pain, greater flexibility, and better mobility.

  • Improved Gut Health: Collagen also supports the lining of your digestive system, improving gut health.

  • Faster Recovery: Collagen may also be able to help in muscle recovery and tissue repair after exercise or injury.

     

Further Readings

→ Collagen Fibrilis

→ What is Elastin? 

 

Are There Any Risks to Taking Collagen Supplements?


So you have a shellfish allergy but you want to take a marine collagen supplement. What should you do? We recommend you talk to your general practitioner first. One study looked at this exact issue, and only a handful of the subjects had a reaction to marine collagen supplementation. It would appear to be a case by case situation. Marine collagen supplementation should not contain shellfish protein allergens, so it should be unlikely to have an allergic reaction. But we always want what's best for you, even if it means we aren't the product for you. Consult your physician and make the best informed decision for you, and your health!

 

Conclusion: Why Collagen Is Essential for Health 


Collagen truly is the glue that holds your body together, keeping you strong, flexible, and youthful. From skin elasticity to bone strength and joint flexibility, collagen plays a critical role in maintaining your overall health.


As we age, collagen levels naturally decline, but with the right diet, lifestyle choices, and supplementation, you can support your body’s collagen production and stay feeling your best. Whether you’re focused on anti-aging, joint health, or just maintaining strong bones, collagen is the foundation that keeps your body thriving.

 

SOURCES


de Miranda, R. B., Weimer, P., & Rossi, R. C. (2021). Effects of hydrolyzed collagen supplementation on skin aging: a systematic review and meta‐analysis.  International journal of dermatology ,  60 (12), 1449-1461.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10180699/


Geahchan, S., Baharlouei, P., & Rahman, A. (2022). Marine collagen: a promising biomaterial for wound healing, skin anti-aging, and bone regeneration.  Marine drugs ,  20 (1), 61.

 https://www.mdpi.com/1660-3397/20/1/61 


Pu, S. Y., Huang, Y. L., Pu, C. M., Kang, Y. N., Hoang, K. D., Chen, K. H., & Chen, C. (2023). Effects of oral collagen for skin anti-aging: A systematic review and meta-analysis.  Nutrie

https://www.mdpi.com/2072-6643/15/9/2080


Rahman, A., Rehmani, R., Pirvu, D. G., Huang, S. M., Puri, S., & Arcos, M. (2024). Unlocking the Therapeutic Potential of Marine Collagen: A Scientific Exploration for Delaying Skin Aging.  Marine Drugs ,  22 (4), 159.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11050892/ 

 
image showing scientist in labratory

The Author: Collagenx Team

The collagenx writing team is experience in scientific research and educated in various research methods. Please view our references below. 

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