Do your knees feel stiff when you climb stairs? Have you noticed more fine lines, or skin that sags and bruises more easily? Do your hair and nails break more than they used to? Many of these changes can come with getting older, and one body protein sits at the center of them all: Collagen. Collagen loss happens slowly to everyone with age, and sun, smoke, and too much sugar can speed it up.

🥚 Meet Collagen

Collagen is the most common protein in people and animals, making up 25% to 35% of all protein. Your body makes at least 28 types of it. Over 90% of the collagen in you is Type I and Type III, the kinds that give skin, tendons, and bones much of their strength.

People have boiled animal skin and bones for glue for thousands of years. Egyptians used collagen glue about 4,000 years ago, and Native Americans used it in bows about 1,500 years ago.

Did you know the word collagen comes from a Greek word for glue, and means giving birth to glue, because boiled skin and tough animal parts turn into glue?

6 Things That Make Collagen Special

🖐️ 1. Keeping Skin Firm and Smooth

Your skin gets its strength from layers of collagen fibers, with another stretchy protein that lets it stretch and spring back. As you age, those layers thin and break down, and sun damage breaks them down more. Your skin gets thinner, drier, and paler, and you may see more wrinkles, sagging, and bruises that come easily. Collagen could help supply the pieces for those layers, since hydrolyzed collagen holds large shares of protein pieces your body can use. For you, that could mean skin that stays firmer and smoother for longer, especially if you also protect it from sun and smoke.

🦵 2. Cushioning Stiff Joints

The ends of your bones are capped with a smooth, firm tissue that lets joints glide and soak up pressure. The main collagen in that tissue makes up half of all protein in it and most of the collagen in joint surfaces. When that tissue wears thin, joints can feel stiff and sore, a common sign linked with collagen loss. Collagen could help give your body more of the pieces it uses to keep that cushion in good shape. That could mean easier mornings and stairs for people whose knees and hands feel creaky with age.

🦴 3. Keeping Bones Strong

Bones feel hard, but inside they have living tissue. The main collagen in bone forms the main part of the soft inner part of bone, and minerals settle on it to make bone hard. Without enough of that inner part, bones get weaker and break more easily. Weaker bones are one of the problems linked with collagen loss through the body. Taking collagen could help provide protein pieces for that inner part, along with a diet rich in vitamins and minerals. That matters most for older adults who worry about staying steady and keeping broken bones away.

🔗 4. Supporting Tendons and Ligaments

Tendons link your muscles to your bones, and ligaments link your bones to each other, so every step and lift pulls on them. Both are made mostly of tight bundles of collagen, which gives them great strength when pulled. Tendons sit close to pure, lined-up collagen, which is why they are so tough. When these tissues weaken with age or overuse, movement can feel less stable and recovery feels slow. Collagen could help care for these bands. For you, that could mean feeling steadier on walks, chores, and light workouts.

One thing before you keep reading 💛 This article teaches, it doesn't diagnose or treat. What works for most people might not be right for you. A quick word with your doctor or pharmacist before starting is always the smart move.