Collagen is the most abundant protein in the human body. It acts like a scaffold, giving your skin, bones, cartilage, and connective tissues their strength and shape. As we age, our bodies produce less collagen — and that affects everything from skin firmness to joint comfort. This article explains what collagen is, what it does, why it declines, and how Canadians can support healthy levels through everyday choices.
What Is Collagen?
Collagen is a complex structural protein made up of amino acids — mainly glycine, proline, and hydroxyproline. These amino acids form long, tightly wound chains called fibrils. Those fibrils give tissues their strength and flexibility.
Think of collagen as the “glue” that holds your body together. In fact, the word comes from the Greek word kolla, which means glue. Your body contains at least 28 different types of collagen, but types I, II, and III are by far the most common.
Type I collagen makes up about 90% of your body’s total collagen. It is found in skin, tendons, bones, and teeth. Type II is mainly found in cartilage, while Type III supports the structure of muscles, organs, and arteries.
What Does Collagen Do in Your Body?
Collagen plays a key role in keeping many parts of your body strong and functional. It is not just a beauty ingredient — it is a critical building block for overall health.
Skin and Appearance
Collagen gives skin its firmness and elasticity. When collagen levels are healthy, skin looks plump and smooth. As production drops, the skin becomes thinner and wrinkles begin to form. This is a natural part of ageing, but certain lifestyle factors can speed it up.
Joints and Cartilage
Cartilage is the rubbery tissue that cushions your joints. It relies heavily on collagen, especially Type II, to stay strong and flexible. Lower collagen levels are linked to joint stiffness and discomfort. This is one reason joint pain tends to increase with age.
According to Mayo Clinic, keeping joints healthy involves a combination of movement, good nutrition, and maintaining a healthy body weight.
Bones and Teeth
Your bones are not just calcium — they also contain a significant amount of collagen. Collagen provides the flexible framework that calcium and other minerals attach to. Without enough collagen, bones can become brittle. This is particularly important for older Canadians, who face a higher risk of osteoporosis.
Muscles and Organs
Collagen makes up about 1–10% of muscle tissue. It helps muscles stay strong and work properly. In addition, collagen supports the structure of your heart, lungs, kidneys, and other vital organs. It also plays a role in wound healing by helping new tissue form after an injury.
Why Does Collagen Decline with Age?
Your body naturally starts producing less collagen in your mid-to-late 20s. After that, production drops by roughly 1% per year. By the time you reach your 50s or 60s, the decline becomes much more noticeable.
For women, collagen loss accelerates significantly after menopause. Healthline notes that women can lose up to 30% of their skin collagen in the first five years following menopause. However, collagen decline affects everyone, not just women.
Lifestyle Factors That Speed Up Collagen Loss
Several everyday habits can cause collagen to break down faster than normal. Being aware of these factors can help you protect what your body still produces.
Sun exposure: Ultraviolet (UV) rays damage collagen fibres in the skin. Regular use of sunscreen helps slow this damage.
Smoking: Tobacco smoke reduces blood flow to the skin and interferes with collagen production. Quitting smoking is one of the most effective things you can do for your skin and overall health.
High sugar intake: Excess sugar triggers a process called glycation, which weakens collagen fibres and makes them less effective.
Chronic stress: High levels of cortisol, the stress hormone, can break down existing collagen over time.
Poor sleep: During deep sleep, your body repairs tissues and produces growth hormone, which supports collagen synthesis. Consistently poor sleep disrupts this process.
Alcohol consumption: Heavy alcohol use dehydrates the body and can impair the nutrients needed for collagen production.
How to Support Collagen Production Naturally
You cannot stop collagen decline entirely, but you can slow it down and support your body’s natural production. The good news is that many of the best strategies are simple and affordable.
Eat a Collagen-Friendly Diet
Your body needs specific nutrients to make collagen. The most important is vitamin C. Without vitamin C, your body simply cannot produce collagen properly. Good sources include citrus fruits, bell peppers, strawberries, and broccoli — all readily available at Canadian grocery stores year-round.
Protein-rich foods also matter. Amino acids from chicken, fish, eggs, beans, and legumes give your body the raw materials it needs to build collagen. In addition, zinc (found in meat, seeds, and nuts) and copper (found in organ meats, nuts, and whole grains) both play supporting roles in collagen synthesis.
Some foods contain collagen directly, including bone broth, chicken skin, and fish with the skin on. However, the body breaks dietary collagen down into amino acids before using it, so eating collagen does not guarantee it goes straight to your skin or joints.
Stay Active
Regular physical activity supports collagen production in muscles, tendons, and bones. Weight-bearing exercise, such as walking, hiking, or strength training, is particularly effective. Most Canadian provincial health guidelines recommend at least 150 minutes of moderate activity per week for adults.
Protect Your Skin from UV Damage
Wearing broad-spectrum sunscreen daily — even on cloudy days — is one of the most evidence-based ways to protect collagen in the skin. Health Canada recommends using an SPF of at least 30. Health Canada offers guidance on sun safety for Canadians of all ages and skin tones.
Consider Collagen Supplements
Collagen supplements — usually in powder or capsule form — have become very popular in Canada. Most products use hydrolysed collagen, also called collagen peptides, which means the collagen has been broken down into smaller pieces for easier absorption.
Some studies suggest that collagen peptide supplements may support skin hydration, reduce the appearance of wrinkles, and ease joint discomfort. However, the research is still evolving, and not all products are equal. Furthermore, collagen supplements are not regulated as strictly as medications in Canada. Always choose products from reputable brands and speak with your family doctor or pharmacist before starting any new supplement.
Collagen and Common Health Conditions
Changes in collagen can be linked to several health conditions that Canadians commonly face. Understanding this connection can help you make more informed health decisions.
Osteoarthritis
Osteoarthritis is the most common form of arthritis in Canada, affecting millions of adults. It occurs when the cartilage — which depends on collagen — breaks down over time. As a result, joints become painful, stiff, and harder to move. While there is no cure, managing weight, staying active, and eating well can slow progression.
Osteoporosis
Osteoporosis causes bones to become weak and more likely to fracture. Collagen is part of the bone matrix that gives bones their flexibility. Therefore, maintaining collagen production — along with adequate calcium and vitamin D — is important for bone health, especially for older Canadian women.
Skin Conditions
Some skin conditions, including certain types of scarring and wound healing problems, involve disrupted collagen production or structure. In addition, rare genetic conditions such as Ehlers-Danlos syndrome affect how the body produces collagen, leading to overly flexible joints and fragile skin.
When to See a Doctor
Most collagen-related changes are a normal part of ageing and do not require medical attention. However, you should speak with a healthcare professional if you notice any of the following:
Persistent or worsening joint pain that affects your daily activities
Skin that bruises very easily or heals slowly after minor injuries
Unusual joint flexibility or instability without a clear cause
Signs of osteoporosis, such as loss of height or a bone fracture from a minor fall
Significant skin changes that concern you
Your family doctor is always a great first point of contact. If you do not have a family doctor — which is a reality for many Canadians right now — a walk-in clinic can assess your symptoms and refer you to a specialist if needed. Many provinces also offer nurse practitioner-led clinics and telehealth services as convenient alternatives.
Always consult your doctor or a registered dietitian before making major changes to your diet or starting new supplements, including collagen products.
Frequently Asked Questions About Collagen
What is collagen and what does it do?
Collagen is the most abundant protein in your body. It provides structural support to your skin, bones, cartilage, muscles, and organs. Without enough collagen, tissues lose their strength, flexibility, and ability to repair themselves.
At what age does collagen production start to decline?
Collagen production typically begins to slow in your mid-to-late 20s. After age 30, most people lose roughly 1% of their collagen each year. The decline becomes more noticeable in your 40s and 50s, and women experience a significant drop after menopause.
Do collagen supplements actually work?
Some research suggests that hydrolysed collagen supplements may improve skin hydration and reduce joint discomfort. However, the evidence is still developing and results vary between individuals. It is a good idea to speak with your family doctor or pharmacist before adding collagen supplements to your routine.
What foods are highest in collagen or help your body make collagen?
Bone broth, chicken with skin, and fish with skin are natural sources of collagen. To help your body produce more collagen, eat foods rich in vitamin C, zinc, and protein — such as citrus fruits, bell peppers, eggs, and legumes. These nutrients give your body the building blocks it needs for collagen synthesis.
Can you rebuild lost collagen?
You cannot fully reverse collagen loss, but you can support your body’s natural collagen production. Eating a nutrient-rich diet, exercising regularly, avoiding smoking, and protecting your skin from the sun all help. Some collagen-boosting skin treatments, such as certain topical creams or professional procedures, may also stimulate new collagen formation.
Is collagen safe to take every day?
For most healthy adults, collagen supplements are considered safe for daily use. They are generally well tolerated and have few reported side effects. That said, always check with your doctor before starting any new supplement, especially if you have allergies, chronic conditions, or take regular medications.
Key Takeaways
Collagen is the body’s most abundant protein, essential for healthy skin, joints, bones, muscles, and organs.
Production naturally declines with age — starting as early as your late 20s.
Smoking, excess sun exposure, high sugar intake, and poor sleep all accelerate collagen loss.
Vitamin C, protein, zinc, and copper are key nutrients that support collagen production.
Collagen supplements may offer benefits, but the evidence is still developing — speak with your doctor first.
Joint pain, easy bruising, slow wound healing, or unusual skin changes are reasons to visit your family doctor or a walk-in clinic.
Simple lifestyle habits — daily sunscreen, regular exercise, a balanced diet, and not smoking — are among the best ways to protect your collagen as you age.
