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People ask me about collagen and gelatin constantly. What’s the difference, which one to buy, and whether they do the same thing.

So here’s the full breakdown.

Both show up everywhere in the gut-healing world, and for good reason. Let me walk you through why.

Are collagen and gelatin the same thing?

Mostly, yes.

For gut-healing purposes, collagen and gelatin give you the same benefits. They come from the same protein and carry the same amino acids. What differs is how they behave and how you use them.

Gelatin is the cooked form of collagen.¹

That cooking step changes the texture, and that’s what makes the two useful for different things. Open a container of each and they look identical. Drop a scoop of each into water and they behave nothing alike. More on that below.

One honest distinction: collagen peptides are processed one step further than gelatin, broken down (hydrolyzed) into smaller pieces so they dissolve in cold liquid and are easy to absorb. Gelatin gels. Peptides don’t. Both feed your body the same building blocks, and collagen peptides happen to have more human research behind them.²

So what do those building blocks actually do? Here are 5 gut-specific benefits.

5 gut health benefits of collagen and gelatin

Whether you pick collagen or gelatin, it’s worth working them in as often as you can.

1. Help restore and strengthen the gut lining, which matters for leaky gut. In cell studies, collagen peptides protected the tight junction proteins that hold your intestinal barrier together.³
2. Support water absorption in the intestines, which helps keep things moving.
3. Deliver healing amino acids like proline, glycine, and lysine, the building blocks your body uses to repair the lining of the stomach and intestines.
4. Support healthy stomach acid. Glycine plays a role in stomach acid production, and adequate stomach acid is what lets you actually break down and absorb your food.⁴
5. Help calm the inflammation tied to the loosening of those tight junctions in the intestinal lining.

Make note: a lot of this research is early, done in cell and animal models, with smaller human studies so far. Promising, not settled. But the amino acids are real, the mechanism is real, and there’s little downside to adding a clean protein you’d want anyway.

5 general benefits of collagen and gelatin

Beyond the gut, here are 5 more reasons people use them:

1. May help preserve muscle mass and support athletic performance.
2. Can support skin health.
3. Aids leaky gut healing (same as #1 above).
4. Can support hair, nails, and teeth.
5. May ease joint pain and support bone health.

A Guide to Collagen Peptides vs Gelatin

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Collagen

Collagen is the most abundant protein in your body and a key part of every connective tissue you have. Roughly a third of your body’s total protein is collagen.

Here’s the catch. According to Dr. Amy Myers, collagen starts depleting faster than your body can rebuild it around age 40, and by age 60 more than half of it is gone. Aging isn’t the only factor. Genetics, smoking, pollution, excess sun, and nutritional gaps all pull collagen levels down.

As collagen drops, you can see it and feel it:

Wrinkles and crepey skin. Stiffer tendons and ligaments. Shrinking, weakening muscles. Joint pain from worn cartilage. And GI issues from a thinning digestive tract lining.

Who Should Take Collagen

Just about anyone looking for a clean, simple protein to keep on hand. Men, women, young, old. It’s an easy way to add protein to your day.

The amino acid makeup of dietary collagen closely matches the collagen in your own body, which is what makes collagen peptides useful for supporting your body’s own collagen turnover.

Same group of people as gelatin.

When to Take Collagen

Start of the day, end of the day, anytime in between.

Some people pair it with a source of vitamin C, which your body uses as a co-factor to build collagen.

How to Take Collagen

Add to:

• Beverages; hot or cold (remember that DIY Lemonade for Constipation recipe?!)
• Spaghetti sauce
• Pancakes (I add it to this recipe all the time, along with gelatin)
• Muffins
• Anything on the gelatin list below

My current favorite way is in my morning coffee:

1. Coffee
2. Add 1/3 – 1/2 scoop collagen
3. Add 1/3 packet Chocolate Salt LMNT
4. Splash of cream

If you want to see this in action, check it out HERE.

My collagen brand of choice

​Perfect Supplements!

There are 2 I toggle between, depending on whether or not I want it flavored:

1. Unflavored collagen from Perfect Supplements (use code AGUTSYGIRL at checkout to save 10%)
2. Chocolate collagen from Perfect Supplements (use code AGUTSYGIRL at checkout to save 10%)

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Gelatin

Gelatin is a strong choice for anyone working to rebuild the stomach and digestive lining for better digestion overall.

Remember, gelatin is the same protein as collagen, just the cooked form.

Who Should Take Gelatin

Anyone looking to strengthen the stomach and digestive lining for better digestion and gut health.

Same group of people as collagen.

When to Take Gelatin

Start of the day, end of the day, anytime in between.

How to Take Gelatin

Collagen is easy anywhere, hot or cold. Gelatin is pickier. The basic rules:

Gelatin is liquid in hot, gel when cold. Always mix gelatin into cold liquid first. Keep it spread evenly to avoid clumping.

More tips on gelatin HERE.

Gelatin Recipes

Collagen peptides fold into anything, but gelatin has its own culinary uses that collagen can’t do:

• Gummies
• AIP Bread (duh) – you’ll also find this recipe in my book, The Leaky Gut Meal Plan
• Pomegranate JELL-O Jigglers
• Banana Coconut Cream Pudding – which can also be found in my book, The Leaky Gut Meal Plan
• Paleo Birthday Cake
• Pumpkin Pie Pudding
• Super Breakfast Bowl
• Healthy Gut Chia Pudding
• Vanilla-Mint Mini Marshmallows

For recipes like these, gelatin is the better pick over collagen.

What to look for in a quality collagen or gelatin

Both are common now, which means quality varies a lot. Look for:

Non-GMO. No unnecessary additives. And genuinely high-quality sourcing.

This one matters more than usual because collagen and gelatin come from animals. Sourcing counts, for your health and on ethical grounds. I know you and I share those values.

More questions? Leave them in the comments.

If you enjoyed this post, you might also enjoy:

1. Does Collagen Help with Acne (+ 4 Other Ways Collagen Can be an Overall Health Boost)
2. Best Packaged Bone Broth
3. Small Intestinal Bacterial Overgrowth

 
Xox,
SKH

1. https://en.wikipedia.org/wiki/Gelatin ↩︎
2. https://pmc.ncbi.nlm.nih.gov/articles/PMC6891674/ ↩︎
3. https://pubmed.ncbi.nlm.nih.gov/28174772/ ↩︎
4. https://nakednutrition.com/blogs/recipes/collagen-supplements-for-gut-health ↩︎