Why We Love Gelatin: The Collagen Powerhouse Hiding in Your Bone Broth

Originally published 2017. Updated 2026.

Gelatin doesn't sound glamorous. It sounds like something in a jelly cup. But the humble gelatin that gives a good bone broth its wobble is one of the most quietly powerful things you can add to your day, and once you understand what it actually does in your body, you'll never look at a mug of broth the same way again.

Let's get into it.

What is collagen, and why does your body need it?

Your body is held together by connective tissue. It's one of the most abundant tissues you have, and it does far more than you'd think. It binds and strengthens your other tissues, protects and lines your organs, carries blood around your body, stores energy in fat, and plays a central role in your immune responses.

The thing that gives connective tissue its strength and flexibility is a protein called collagen. It's the most abundant protein in your entire body, making up around a quarter of your total protein, and it's built from a specific set of amino acids: glycine, proline, hydroxyproline and arginine.

The word collagen comes from colla, the Greek word for glue, and that's exactly what it is. It's the glue that holds you together. Collagen fibres sit throughout your connective tissue, especially in your bones, cartilage, tendons and ligaments. In your cartilage, collagen surrounded by water gives that lovely cushioning effect, while bundled fibres give your tissues their tensile strength. It's the reason young skin bounces back and young joints move without complaint.

What is gelatin, and how is it different from collagen?

Here's where bone broth comes in. Gelatin is what you get when collagen is broken down through slow, gentle cooking. They're the same substance in two forms: collagen is the raw structural protein in the bones, and gelatin is that collagen partially broken down into a form your body can actually absorb and use.

So when you drink a good bone broth, you're getting collagen delivered as gelatin, ready for your body to put to work. That's the whole magic of it, and it's why a proper broth wobbles when it's cold. That wobble is the gelatin. No wobble, no gelatin, no point.

Why is bone broth such a good source of collagen?

It should be no surprise that the jointy, collagen-rich bones we use in our bone broth are one of nature's best sources of the stuff. During long, slow simmering, the collagen in the bones breaks down into gelatin and transfers into the broth.

That long simmer does two jobs at once. It draws the collagen out, and it pulls minerals like phosphorus, magnesium, silicon and sulphur from the bones into the broth. The result is a rich, gelatinous, protein-packed liquid that you simply can't get from a stock cube or a watery carton. This is exactly the difference between a real bone collagen broth and the shortcut versions. Whether it's a nourishing chicken bone broth or a hearty grass fed beef bone broth, time is the ingredient you can't fake.

Why does collagen matter more as we age?

Here's the part that catches most of us off guard. As we get older, our bodies start producing less collagen naturally. That decline shows up in ways you'll recognise: thinning and sagging skin, wrinkles, cellulite, achy joints, and a gradual loss of bone mass. For women, this speeds up noticeably from our forties onwards as hormones shift.

Which is exactly why it becomes more important, not less, to include gelatin-rich foods like bone broth in your diet as you age. The principle is a simple one: like produces like. Giving your body the building blocks of collagen supports its own natural collagen production, at the very stage of life when it needs the extra help.

What are the health benefits of gelatin in bone broth?

Beyond the collagen story, gelatin earns its keep in a few other ways:

It supports your gut. Gelatin is soothing to the lining of the digestive tract and helps your body absorb protein. If you've been searching for a gut health bone broth, this is why broth has that reputation.

It supports your joints. The easily digestible nutrients in gelatin (the GAGs, for the science-minded) may help reduce stiffness and support your joints and bones as you age.

It supports digestion and hydration. Gelatin absorbs water, which helps retain fluid in the gastrointestinal tract and supports healthy, regular digestion.

It's protein you can sip. A mug of premium bone broth is a naturally high-protein, low-carb way to nourish yourself between meals, without much else added.

Is bone broth really better than Botox?

If all of that isn't enough to win you over, let me appeal to your vanity for a second. Bone broth has long been described as being better than Botox for softening wrinkles and bringing back a glow to skin and hair, and while we'd never promise miracles, there's real logic to it. You're feeding your body the exact raw materials it uses to build the collagen that keeps skin firm and hydrated.

It's not a magic potion. It's a genuinely nourishing whole food that happens to do beautiful things when you make it a regular habit. We'd suggest you give it a try as part of a good quality diet and see for yourself what it does for you.

Nature's own multivitamin, in a mug.

The Broth Sisters bone broth is slow simmered in Melbourne from quality Australian ingredients, rich in the natural gelatin and collagen your body loves. Whether you're in Melbourne, Sydney, Brisbane or Perth, you'll find us at Harris Farm and independent health food stores nationally.

Reference: Tortora, G, Derrickson, B 2014, Principles of Anatomy & Physiology, Wiley, USA.