7 Common Lifestyle Habits That Reduce Collagen Production

Collagen is the most abundant protein in the human body. It acts as a structural framework that helps keep skin firm, joints flexible, bones strong and connective tissues resilient. It also plays an important role in supporting the gut lining, blood vessels and overall tissue integrity.

Your body naturally produces collagen using amino acids and key nutrients obtained from food. However, collagen production doesn’t stay constant throughout life. From around your mid-20s onwards, the body’s ability to produce new collagen gradually begins to decline.

Ageing is only part of the story.

Many everyday lifestyle habits can accelerate collagen breakdown or reduce the body’s ability to produce it efficiently. Things like excessive sugar intake, smoking, chronic stress, poor sleep and inadequate nutrition can all affect the delicate balance between collagen production and degradation.

Over time, reduced collagen levels can contribute to changes such as loss of skin elasticity, slower tissue repair, joint stiffness and weakened connective tissues.

Understanding which habits influence collagen production is an important step toward supporting long-term health. In this article, we’ll explore some of the most common lifestyle factors that can reduce collagen production — and what you can do to help protect and support your body’s natural collagen levels.

What is collagen and how does the body produce it?

Collagen is a structural protein that forms the foundation of many tissues in the body. It acts like a biological “scaffolding,” providing strength, flexibility and support to structures such as the skin, tendons, ligaments, cartilage, bones and blood vessels.

In fact, collagen accounts for around one-third of the total protein in the human body, making it the most abundant protein we have.

There are several types of collagen, but the most common include:

• Type I collagen – found in skin, bones, tendons and connective tissues
  
• Type II collagen – primarily found in cartilage and joints
  
• Type III collagen – supports skin, blood vessels and internal organs

These collagen fibres form strong, rope-like structures that help tissues maintain their strength and elasticity.

How the body produces collagen

Collagen production occurs mainly in specialised cells called fibroblasts, which are found in connective tissues throughout the body.

The process begins with amino acids — the building blocks of protein. When you consume protein from foods such as meat, fish, eggs, legumes or dairy, your digestive system breaks it down into amino acids. These amino acids are then used by the body to synthesise new proteins, including collagen.

Several key amino acids are particularly important for collagen formation:

• Glycine
  
• Proline
  
• Hydroxyproline

However, amino acids alone aren’t enough. The body also requires certain vitamins and minerals to support collagen synthesis. Important supporting nutrients include, vitamin C, zinc, copper, adequate overall protein intake.

When all of these components are available, fibroblast cells can assemble collagen molecules, which then form strong fibres that help maintain the structure and resilience of tissues throughout the body.

But when key nutrients are lacking — or when certain lifestyle habits interfere with this process — collagen production can slow down, and existing collagen can break down more quickly.

Here are the lifestyle habits that can reduce collagen production.

Habit #1 – Excess sugar intake

High sugar intake can negatively affect collagen through a process known as glycation.

Glycation occurs when excess sugar molecules in the bloodstream attach to proteins — including collagen. This reaction leads to the formation of compounds called Advanced Glycation End Products (AGEs).

These AGEs can damage collagen in several ways:

• They cause collagen fibres to become stiffer and less flexible
  
• They interfere with the normal structure of collagen
  
• They make collagen more vulnerable to breakdown

Over time, this can weaken the structural integrity of tissues that rely on collagen for support.

In the skin, glycation can contribute to reduced elasticity, increased wrinkle formation and slower tissue repair. In connective tissues such as tendons and ligaments, damaged collagen fibres may also affect flexibility and resilience.

Another issue is that glycation can affect the body's ability to produce new collagen efficiently. When collagen fibres become damaged by AGEs, the body may struggle to repair them at the same rate they are breaking down.

This doesn’t mean that sugar must be completely eliminated. However, regular consumption of high-sugar foods and beverages — especially ultra-processed products and sugary drinks — may accelerate collagen degradation over time.

Habit #2 – Smoking

Smoking is one of the most well-known lifestyle factors that accelerates collagen breakdown.

Tobacco smoke contains thousands of chemicals that affect the body in multiple ways, many of which directly damage collagen and the cells responsible for producing it.

One of the main mechanisms is reduced oxygen delivery to tissues. Smoking constricts blood vessels, which limits the flow of oxygen and nutrients to the skin and connective tissues. When fibroblast cells receive less oxygen and fewer nutrients, their ability to produce new collagen is reduced.

Smoking also increases oxidative stress in the body. Free radicals generated by tobacco smoke can damage existing collagen fibres and trigger enzymes that break down collagen and elastin — the proteins responsible for maintaining skin strength and elasticity.

In addition, smoking can impair the body’s use of vitamin C, an essential nutrient required for collagen synthesis. Lower vitamin C availability means the body may struggle to form stable collagen fibres.

Over time, these effects can contribute to:

• Reduced skin elasticity
  
• Increased wrinkle formation
  
• Slower wound healing
  
• Weaker connective tissues

This is why smoking is often associated with visible signs of premature skin ageing, sometimes referred to as “smoker’s skin.”

Beyond cosmetic effects, the damage to collagen can also influence the health of blood vessels, joints and connective tissues, highlighting how lifestyle habits can affect structural proteins throughout the body.

Habit #3 – Excessive UV exposure

Prolonged exposure to ultraviolet (UV) radiation from the sun is one of the most significant external factors that can accelerate collagen breakdown. This process is often referred to as photoaging — premature ageing of the skin caused by UV exposure.

When UV radiation penetrates the skin, it triggers the production of enzymes called matrix metalloproteinases (MMPs). These enzymes break down collagen fibres in the skin’s connective tissue.

At the same time, UV exposure can reduce the activity of fibroblast cells, which are responsible for producing new collagen. This creates an imbalance where collagen is broken down faster than the body can replace it.

Over time, repeated UV exposure can lead to:

• Reduced skin elasticity
  
• Thinner skin structure
  
• Increased wrinkle formation
  
• Slower repair of skin tissue

UV radiation also increases oxidative stress, generating free radicals that further damage collagen and other structural proteins in the skin.

Read related article: Is Your Dry Skin a Sign of a Vitamin Deficiency?

It’s important to note that some sun exposure is necessary for the body to produce vitamin D, which supports overall health. However, prolonged or unprotected exposure — particularly during peak UV hours — can accelerate collagen degradation.

Protective habits such as using sunscreen, wearing protective clothing and limiting excessive sun exposure can help reduce this effect and support healthier skin structure over time.

Habit #4 – Poor protein intake

Collagen is a protein, which means the body needs an adequate supply of dietary protein to produce it.

When you consume protein from foods such as meat, fish, eggs, dairy, legumes or nuts, your digestive system breaks these proteins down into amino acids. These amino acids are then used by the body to build and repair tissues, including the synthesis of collagen.

We’ve mentioned earlier that several amino acids are particularly important for collagen formation, including, glycine, proline, and hydroxyproline.

If overall protein intake is too low, the body may not have enough of these building blocks to support optimal collagen production. Over time, insufficient protein intake may affect the body’s ability to maintain connective tissues such as skin, tendons, ligaments and cartilage.

Protein is also important for tissue repair and regeneration. Collagen fibres are constantly being broken down and rebuilt as part of normal tissue turnover. Without adequate protein, this renewal process may become less efficient.

For most people, a balanced diet that includes a variety of protein sources can provide the amino acids needed to support collagen production. These may include:

• Lean meats and poultry
  
• Fish and seafood
  
• Eggs
  
• Dairy products
  
• Legumes and plant-based proteins

Habit #5 – Chronic stress

Stress is a normal part of life, but long-term or chronic stress can affect many systems in the body — including collagen production.

When the body experiences stress, it releases hormones such as cortisol as part of the natural “fight or flight” response. While cortisol is helpful in short bursts, prolonged elevations can have negative effects on tissue health.

One way chronic stress affects collagen is by increasing the breakdown of proteins in the body. Elevated cortisol levels can stimulate processes that break down collagen and other structural proteins, while also slowing the body’s ability to repair and regenerate tissues.

Chronic stress can also contribute to increased inflammation and oxidative stress, both of which can damage existing collagen fibres. Over time, this imbalance between collagen breakdown and production may affect the strength and resilience of connective tissues.

Another indirect effect of stress is its impact on daily habits. When people are under prolonged stress, they may experience:

• Poor sleep
  
• Changes in appetite or nutrition
  
• Increased consumption of sugary or processed foods
  
• Reduced physical activity

These lifestyle changes can further influence the body’s ability to maintain healthy collagen levels.

Managing stress through healthy coping strategies — such as regular physical activity, adequate sleep, balanced nutrition and relaxation techniques — can help support overall wellbeing and may also help maintain the body’s natural processes involved in tissue repair and collagen production.

Habit #6 – Poor sleep

Sleep plays an essential role in the body’s ability to repair and regenerate tissues — including those that rely on collagen.

During sleep, the body enters restorative phases where many biological processes occur, including cell repair, hormone regulation and protein synthesis. One of the key hormones involved in this process is growth hormone, which is released in higher amounts during deep sleep.

Growth hormone helps stimulate tissue repair and supports the production of structural proteins such as collagen. When sleep is consistently disrupted or insufficient, the body may produce less growth hormone, which can slow down these regenerative processes.

Poor sleep can also increase levels of stress hormones like cortisol, which — as mentioned earlier — may contribute to increased collagen breakdown. Over time, this imbalance between collagen production and degradation can affect the health of skin and connective tissues.

In addition, sleep deprivation has been associated with increased inflammation and oxidative stress, both of which can damage collagen fibres and interfere with the body’s ability to maintain healthy tissue structure.

Beyond collagen, inadequate sleep can also influence other lifestyle habits that affect overall health, including appetite regulation, energy levels and dietary choices.

Maintaining good sleep habits — such as consistent sleep schedules, reducing late-night screen exposure and ensuring adequate rest — supports the body’s natural repair processes and helps maintain the systems involved in collagen production.

Read related article: Need Quality Rest? Here are 16 Tips to Fall Asleep Faster

Habit #7 – Nutrient deficiencies

Producing collagen is not just about consuming protein. The body also relies on several essential vitamins and minerals to properly form, stabilise and maintain collagen fibres.

If these nutrients are lacking, the collagen production process may become less efficient, and the body may struggle to repair connective tissues effectively.

One of the most important nutrients for collagen synthesis is vitamin C. This vitamin plays a critical role in the chemical reactions that convert amino acids such as proline and lysine into the forms needed to build stable collagen fibres. Without adequate vitamin C, collagen molecules cannot form properly, which is why severe vitamin C deficiency historically led to conditions like scurvy, characterised by weakened connective tissues and poor wound healing.

Other nutrients also support collagen formation and tissue repair.

• Zinc helps with cell growth, tissue repair and immune function. It supports the activity of enzymes involved in collagen synthesis.
  
• Copper plays a role in cross-linking collagen fibres, which helps strengthen connective tissues.
  
• Iron supports oxygen delivery to cells, including fibroblasts that produce collagen.
  
• Vitamin A contributes to skin health and supports cellular regeneration.

When the body lacks these nutrients, the processes that build and maintain collagen may slow down, potentially affecting skin health, joint integrity and overall tissue resilience.

A balanced diet that includes a variety of whole foods — such as fruits, vegetables, lean proteins, nuts, seeds and whole grains — typically provides these nutrients.

Supporting protein intake with convenient options

While whole foods should always form the foundation of a balanced diet, some people may look for convenient ways to increase their protein intake, especially during busy schedules or after exercise.

For example, Chief Nutrition products offer a range of high-protein snack and supplement options made from quality ingredients. These can be useful for people who want a simple way to support daily protein intake.

Some options include:

• Chief Beef Bars – high-protein bars made from organic, grass-fed Australian beef
  
• Chief Biltong – slow air-dried grass-fed beef that is naturally high in protein and low in carbohydrates
  
• Chief Whey Protein Powder – made from grass-fed Australian milk and naturally rich in essential amino acids
  
• Chief Collagen Protein Bars – convenient snack bars that contain collagen to support joints, skin and connective tissues
  
• Chief Collagen Protein Powder – hydrolysed collagen peptides (Type I & III) that provide amino acids involved in collagen production

Products like collagen protein powder and collagen protein bars can be particularly useful because they provide collagen-derived amino acids that support connective tissues, while still contributing to overall protein intake.

👉 Shop the full range of Chief Nutrition healthy protein snacks and supplements

Conclusion

Collagen plays a crucial role in maintaining the strength and structure of many tissues in the body — from skin and joints to bones, blood vessels and connective tissues. While natural collagen production gradually declines with age, everyday lifestyle habits can also influence how efficiently the body produces and maintains this important protein.

The good news is that many of these factors are modifiable. Supporting collagen production often comes down to maintaining balanced daily habits — including consuming adequate protein, ensuring sufficient intake of key nutrients, managing stress, prioritising sleep and protecting the skin from excessive sun exposure. Small, consistent lifestyle choices can make a meaningful difference in supporting the body’s natural processes involved in tissue repair and collagen maintenance.