Why Collagen Declines with Age, and What Speeds It Up

Your skin bounces back a little slower than it used to. Your knees have opinions about the stairs. A lot of that comes down to one protein your body quietly makes less of every year: collagen. 

Collagen declines with age because the cells that make it slow down and get fewer signals to keep building. Production slows gradually through adulthood. Menopause, sun exposure, smoking, and high sugar intake can all speed that loss up. 

Why Collagen Declines With Age 

Collagen is your body's main structural protein. It makes up about 30% of all the protein in your body and most of your skin's support layer. It also helps hold together your joints, bones, and tendons. 

As you get older, your skin makes less of the two main types, I and III, and this happens in both men and women. 

Researchers have found two reasons this happens. First, the cells that build collagen, called fibroblasts, age and work more slowly. Second, they get fewer "keep building" signals from the tissue around them. 

That second part creates a cycle. As collagen gets looser and more fragmented, the cells feel less tension, so they make even less. Less collagen leads to weaker structure, which leads to less collagen. 

Menopause: The Biggest Natural Speed-Up 

For women, the steepest drop isn't gradual at all. Estrogen helps support collagen in the skin, so when estrogen falls during menopause, collagen follows. 

Research suggests women can lose up to 30% of their skin collagen in the first five years after menopause. After that, skin collagen and skin thickness keep declining by about 1 to 2% a year. 

3 Everyday Things That Speed Up Collagen Loss 

Age sets the pace, but some habits press the gas pedal. 

1. Sun exposure: UV light hits collagen from two sides. It speeds up breakdown and slows down new production. In one study, collagen-breaking enzymes switched on within hours of UV exposure, even at doses too low to cause redness. You don't need a sunburn for the damage to start.
2. Smoking: In one study, smokers made 18% less type I collagen and 22% less type III collagen than non-smokers. Smoking also raises levels of enzymes that break collagen down.
3. Too much added sugar: Sugar can attach to collagen fibers and form compounds called AGEs. These stiffen the fibers and make them harder to repair.

5 Simple Habits That Help Protect Your Collagen 

• Wear sunscreen every day, even when it's cloudy, and reach for a hat on long days outside. 
• Skip the cigarettes. If you smoke, quitting is one of the best things you can do for your skin. 
• Cut back on added sugar, especially sodas and sweetened drinks. 
• Eat vitamin C foods like citrus, bell peppers, strawberries, and broccoli. Your body needs vitamin C to make collagen. 
• Get enough protein from foods like eggs, fish, chicken, beans, and Greek yogurt. Collagen is a protein, so your body needs the raw materials. 

What to Expect 

Collagen changes happen slowly, over years, and so do the benefits of protecting it. Think of these habits like saving a little every month: small, steady, and worth it over time. 

Looking for a Little Extra Support? 

Along with the basics, many people add a multi-collagen supplement as part of their healthy-aging routine. If you're weighing one up, our guide to collagen for skin, joints, and bone health covers what the research says and how to choose. 

Follow the serving size on the label, and talk to your doctor before adding anything new. 

When to Talk to Your Doctor 

Some skin and joint changes are a normal part of getting older. Check in with your doctor if you notice sudden changes, such as skin that bruises or tears very easily, wounds that are slow to heal, or joint pain that limits your day.

FAQ 

At what age does collagen start to decline?  

Collagen production slows gradually through adulthood. For women, the drop speeds up sharply in the first few years after menopause. 

Do men lose collagen too?  

Yes. Aging slows collagen production in everyone. Without menopause, the decline is usually more gradual. 

Can I get collagen from food?  

Your body builds its own collagen from the protein you eat, with help from vitamin C. Balanced meals with protein, fruits, and vegetables give it the raw materials. 

What is the difference between single collagen and multi-collagen?  

A single collagen supplement contains one type of collagen. Multi-collagen blends several types, such as 1, 2, 3, 5, and 10, often from different sources.