Collagen is the most important structural protein in connective tissue and is essential for the health of skin, bones, tendons and cartilage. It provides strength, elasticity and resilience - properties that keep our tissues resilient and functional.
The body's own collagen production tapers off gradually from the mid-twenties onwards. That is a normal process; UV radiation, smoking and a one-sided diet can speed it up.
Collagen deficiency is not a medical diagnosis but a shorthand for the changes that decline brings about in the tissue. The sections that follow set out what lies behind it.
Causes of a collagen deficiency
Natural collagen degradation with age
The body's own collagen production tapers off gradually from the mid-twenties, by an estimated 1–2% a year. That is a normal process. Over time it shows up as wrinkles, as skin that loses its tone, and as joints that take less load.
External factors that destroy collagen
- UV radiation: Prolonged exposure to the sun promotes the breakdown of collagen in the skin and accelerates skin ageing.
- Environmental pollution: Pollutants and fine dust attack the collagen structure, especially in the respiratory tract.
Diet-related collagen loss
Diet plays a crucial role in collagen production. Some factors that have a negative impact are:
- Refined foods: processed products and sugar promote inflammation, which can break down collagen.
- Free radicals: Oxidative stress damages collagen fibers and accelerates their breakdown.
- Nutrient deficiency: A deficiency in vitamin C, zinc and essential amino acids can significantly reduce collagen synthesis.
Lifestyle and collagen production
An inactive lifestyle can further increase the collagen deficiency. Mechanical load from movement is the stimulus that connective tissue remodels in response to. Where there is little movement, that stimulus is missing.
Signs of a collagen deficiency
A collagen deficiency can manifest itself in the body in various ways. As collagen is essential for the health of the skin, joints, hair and muscles, the first symptoms can appear gradually and intensify over time.
Skin: First visible signs of collagen degradation
- Wrinkle formation: Collagen provides tone, firmness and elasticity to the skin. A deficiency leads to sagging skin, fine lines and deeper wrinkles.
- Dry skin: Collagen fibres sit in the dermis alongside the water-binding molecules of the matrix; as their density falls, skin can feel drier and rougher.
- Slower wound healing: If the body lacks collagen, regeneration after injuries is impaired. Wounds heal more slowly and there is more frequent scarring.
Joints: pain and limited mobility
Cartilage and joints
Collagen makes up a large share of the dry weight of joint cartilage — in cartilage it is mostly Type II. As cartilage mass falls, the joint loses cushioning. Osteoarthritis is a degenerative joint disease and belongs in medical hands; a food supplement is no substitute for that.
Increased susceptibility to injury
Collagen gives ligaments and tendons their stability. A deficiency can make joints unstable and increase the risk of sprains or dislocations.
Other symptoms of a collagen deficiency
Hair and keratin
Hair itself is made of keratin, not collagen. Collagen sits in the dermis, where the hair follicles are anchored; collagen peptides supply amino acids that the body also uses to form keratin.
Muscle and tendon
Collagen forms the sheaths around individual muscle fibres and whole muscle bundles, and carries on into the tendon at the end of the muscle. The contractile proteins of the muscle itself are actin and myosin.
Persistent joint or skin complaints belong in medical hands. If, separately from that, you want to keep an eye on your protein intake, a collagen-rich diet is one route, and so are high-quality collagen supplements.
What influences the body's own collagen formation
The age-related decline cannot be stopped. A number of other factors act on connective tissue independently of it, though — and those are the ones within your control.
Healthy nutrition and collagen promotion
A balanced diet forms the basis for optimal collagen biosynthesis. Give preference to foods that are rich in vitamin C, zinc and essential amino acids. Vitamin C contributes to normal collagen formation. A collagen-rich diet, or collagen powder or capsules, is one way of adding protein to what you eat.
Regular physical activity
Mechanical load is the stimulus that tendon, ligament and bone remodel in response to. Strength training supplies it most clearly, but regular everyday movement supplies it too.
Protection against harmful environmental influences
Some outside influences speed up the breakdown of collagen in the skin. Reduce your exposure to:
- UV radiation: Prolonged exposure to the sun can promote collagen breakdown in the skin.
- Pollution: Pollutants, smoke and harmful gases stress the body and contribute to premature collagen loss.
- Tobacco smoke: Smoking is a major factor that weakens the collagen structure and leads to premature skin ageing.
Adequate fluid intake and stress management
Adequate hydration not only supports the general metabolism, but also the health of the skin. Stress also has a negative effect on the collagen balance. Relaxation exercises such as yoga or meditation help to reduce stress.
None of this stops the natural course of things — but it is the part you can influence.
Conclusion
Collagen is an essential component of all organs in the body. It is part of the structure of most organs and plays a number of vital functions in them. Several factors can slow its formation or speed up its breakdown. What that means in an individual case is a question for your doctor — this article is no substitute for that.
Image credits: Photos from Europeana, Alexander Grey, Brooke Lark on Unsplash