Marine vs Bovine Collagen For Keto Diet – Which is better for you?

minute read | Last update: Jan 22nd2024

This article is backed by studies and reviewed by a certified dietician.

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Not all collagen is created equal. Depending on whether you’re taking marine or bovine collagen on the keto diet, you may not be getting the full range of benefits you should be. Which is the better option, marine or bovine collagen?

Bovine collagen is the superior collagen of the two. While marine collagen contains mostly type I collagen, bovine collagen has type I as well as type III collagen for more bodily benefits and healthier, younger-looking skin.

Still confused about what collagen is? Not sure how bovine versus marine collagen works? In this article, we’ll answer all those questions and more. By the time you’re done reading, you’ll know which type of collagen will keep you the healthiest on keto.

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What Is Collagen?

Okay, let’s start with what we’re sure is your biggest question, what exactly is collagen?

Collagen is a type of protein in the extracellular matrix of mammals, primarily connective tissue. Our organs, blood vessels, tendons, ligaments, nails, hair, skin, bones, and muscles are collagen too. As much as 35 percent of all the protein in the body of an average mammal comes from collagen.

Depending on the type, collagen can be tightly-packed or looser. Experts have identified at least five types of collagen, but it’s believed there are upwards of 15 kinds. Type I collagen comprises bone, organs, vasculature, tendons, and skin. Our cartilage comes from Type II collagen and our reticulate matter from Type III.

The basal lamina in the basement membrane is produced by Type IV collagen. We won’t go super in-depth here, but the basement membrane is another part of the intracellular matrix. Finally, Type V collagen produces placenta, hair, and cell surfaces.

Why Would You Consider Taking a Collagen Supplement? The Benefits of Keto Collagen

When you look in the mirror, almost everything you see is due to collagen. The human body can produce collagen, but only to an extent. You begin slowing down collagen production as you age. Whether you’re in your 20s now or older, it’s never too late to start taking collagen supplements.

Here is why keto collagen is so beneficial.

Maintains Bone Strength

Another change that comes with age is brittle, weak bones. Your chances of developing osteoporosis are higher as well. Keto collagen can cradle and support your bones, giving them structure and maintaining their density.

Might Improve Muscle Mass

You need collagen for your musculature, but can it increase the size of your muscles as well? The consensus among scientists is still out on that one, with some experts believing that yes, it’s possible. At the very least, exercising and eating a low-carb diet is a great way to bring out your strongest muscles yet!

Keeps Your Nails, Skin, and Hair Healthy

Everyone wants to look their best, and keto collagen can help you do it. Collagen supplements can prevent brittle nails (just as it does weak bones) so your nails won’t snap. Your hair will be less prone to breakage and unappealing split-ends.

The biggest perk by far is how good your skin will look on keto collagen. Expect skin that is hydrated and fresh with suppleness and elasticity as well as fewer wrinkles per this 2012 report from the journal Dermato Endocrinology.

Might Boost Your Gut Health

Within your gut is a microbiome of living bacterial organisms that–for the most part–promote your health. If your microbiome is on the decline, you might notice symptoms such as sudden food intolerances, uncomfortable skin conditions, chronic fatigue, and stomach pain.

Bodies of research, including a publication of Current Opinion in Rheumatology from 2020, found that edible collagen can keep our gut flora happy and thriving. **

Where Does Collagen Come From? Production and Sourcing of Marine vs. Bovine Collagen

Outside of our body’s ability to produce collagen, lots of foods are also rich in the protein. However, for those on specialized diets such as the vegan or keto diet, consuming collagen-rich foods can be a challenge. That’s why keto collagen supplements are so convenient.

Where does the collagen in these supplements come from? That answer varies based on whether you’re talking about marine or bovine collagen. Let’s talk more about these two collagen sources now.

Marine Collagen Sourcing

Marine collagen refers to that which comes from the sea. The fish used in commercially-produced collagen are either aquaculture or wild-caught. Aquaculture fish are raised in fisheries or farms where they’re reared and mated to add to the population.

Those fish that are wild-caught do not live their lives in a fishery, but rather, are free. Well, until a fishing team comes to the fish’s lake, river, or ocean home and scoops up the creature.

The collagen peptides from fish are mostly Type I. As you recall from earlier, Type I collagen is that which our bones, organs, tendons, and skin utilize. Most collagen, around 90 percent, is believed to be Type I collagen.

Marine collagen may be somewhat rich in Type II collagen as well, which is mostly used for cartilage production.

Bovine Collagen Sourcing

When most people say bovine, they think of cows, but cows are not the only bovine animal. Water buffalo, bison, antelope, and yak are considered bovine creatures as well. When these animals die, be it of natural means or other causes, their bones are boiled. Byproducts of the bovine animal such as hooves and cartilage may undergo boiling as well.

When the animal parts finish boiling, manufacturers can separate the collagen, dry it, and then make it into a powder supplement.

Like marine collagen, bovine collagen is a tremendous source of Type I collagen. It’s also got lots of Type III collagen, which produces reticular connective tissue fibers. These fibers connect into a sort of safety net known as reticulin. The reticulin cradles the lymphatic system’s organs, tissues, bone marrow, and liver.

Your skin consists predominantly of Type I and Type III collagen. Between bovine and marine collagen, if you want hydrated, elastic skin with fewer wrinkles, bovine keto collagen should be your top choice.

How to Make an Amazing Collagen Shake

If you’re looking for a bovine collagen supplement, our Authentic Keto collagen is a great option. This chocolate-flavored collagen powder is sourced from grass-fed bovine collagen yet is dairy-free. With no artificial sweeteners or flavors, you don’t have to worry about bogging down your diet with sugar.

We include medium-chain triglyceride or MCT oil in our keto collagen, which may promote weight loss. The rich chocolate flavor will satisfy any sweet tooth!

Here’s our favorite recipe for an awesome collagen shake:

Combine Authentic Keto collagen (a scoop) with peanut butter (a tablespoon), water, ice, almond milk (a cup), and half-and-half or heavy whipping cream (half a cup).

This tasty drink is a great way to start your day, not to mention it will promote satiety well into lunchtime.

Our keto collagen supplement doesn’t have lumps, so if you’d rather mix your powder into a hot beverage, it’ll dissolve quickly and evenly.

Oh, and did we mention there’s no aftertaste either? This supplement is one of the best ways to get your daily dose of bovine collagen for healthier skin.


Bovine collagen contains Type I and Type III collagen, which supports healthy, youthful skin. It’s also fish-free for those with fish allergies, which is another reason that it’s the top collagen source for keto dieters.

Try our Authentic keto collagen powder in delicious chocolate flavor, as it’s an authentic source of bovine collagen. Each jar is enough for 30 servings. Our collagen won’t disrupt ketosis either, so start incorporating a supplement into your diet today!

About the author

The Authentic Keto Team is here to bring you health tips that help you with losing weight fast. We focus on a clean keto diet for beginners because we believe that is the easiest and most simple way to healthy eating. Our keto weight loss tips will not only bring you into ketosis fast but will also help you to improve your mental health, sleep problems, and wellness.

- Our goal is to make keto success easy. -

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