posted: December 8, 2023

updated: December 8, 2023

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product review of fatty15 supplement
rating fatty15 supplement

FHM Rating: 4.5/5

Fatty15 is a science-backed C15:0 supplement designed to support your long-term health and wellness and has been clinically proven to be 3x better than omega-3.

Fatty15 is one of the most innovative cellular health discoveries in the last 90 years. Comprised of pure C15:0, an essential fatty acid proven to promote healthy cells, this supplement can help improve your metabolism, immunity, heart health, and more.

If you’re like me, you probably grew up hearing that we should be avoiding fat in our diets. Especially saturated fats. I can vividly remember people close to me saying I should stop using whole milk in my morning cereal because it would make me fat.

The truth is that my well-meaning family was just leaning into what they were told back when they were young. In 1977 the US government have dietary advice that basically stated that we needed to eat less fat in order to decrease our risk for heart disease. So that’s what the majority of us did.

Fast forward to a study conducted in 2015 and it turns out that there was no evidence to support that advice given to us decades prior.

As new evidence emerges, we’re learning that not all saturated fatty acids are equal and that the term saturated doesn’t automatically mean it's bad. In fact, our bodies need healthy saturated fats to support our health and longevity, and there’s one company that’s changing the way to understand fat and the role it plays in our bodies: fatty15.

The team behind fatty15 has created a revolutionary, science-based product that’s clinically proven to be a critical nutrient for helping our bodies sustain good health.

In this article, I’m reviewing fatty15; the science, the brand story, who it’s for, and finally whether it’s worth trying as a form of healthy aging and increased longevity.

Fatty Acids and Aging

Before we dive into the intricacies of fatty15, let’s first explore fatty acids and the role they play in our bodies and in relation to healthy aging. 

Our bodies are made up entirely of cells. Naturally, our bodies become more fragile as we age, causing us to feel less energized and more imbalanced. However, we don’t need to succumb to the narrative that we’re destined to feel old, tired, and sluggish as we age. We can give our cells a fighting chance to continue to work for us as we age.

We all know that a healthy, balanced diet and exercise program can help us to age gracefully, but there’s more we can do, and that comes in the form of fatty acids. Certain kinds of fatty acids have been shown to slow age-related breakdown in our cells. C15:0 (aka FA15 which is the pure, fatty acid powder in fatty15) is one of them.

Wait, Saturated Fatty acids can be healthy?

Yes! However, it’s important to understand that not all saturated fatty acids are created equally. There are odd-chain and even-chain fatty acids, named for the number of carbon atoms they carry, and our bodies break them down in different ways. Here’s how:

Even-Chain Fatty Acids - more of this type of fatty acid in your diet has been associated with an increased risk of inflammation, heart disease, and type 2 diabetes. These are the fatty acids that are best avoided or minimized in our diets.

Odd-Chain Fatty Acids - higher levels of this type of saturated fatty acid have been associated with good health, including; immune function, heart health, metabolism, liver health, and red blood cell health. fatty15 (FA15) is an odd-chain fatty acid, the first essential fatty acid to be discovered in 90 years.

All About C15:0 (FA15)

C15:0 or FA15 is the pure fatty acid powder found in the supplement fatty15 and it has been shown to support our bodies in the pursuit of good health and longevity. Here’s how:

1. It strengthens cell membranes for an 80% improvement in cellular stability according to this study. C15:0 gets integrated into our cell membranes, serving as armor for our cells to keep them healthy and protected. Furthermore, studies show that C15:0 protects cells against premature breakdown. 

2. It keeps mitochondria working for a 45% improvement in mitochondrial function. Studies in human cells show that FA15 helps to repair mitochondrial function to keep our powerhouses functioning optimally.

3. It promotes mind and body health by activating receptors in our body that regulate our metabolism, immunity, mood, sleep, and appetite. Studies have shown that C15:0 naturally binds to peroxisome proliferator-activated receptors throughout our bodies that play a role in our metabolism, immunity, and brain, which has a direct correlation to our mood, sleep, and appetite.

Quick Summary Review of fatty15



What are the ingredients in fatty15?

Fatty15 contains one ingredient only - pure pentadecanoic acid (C15:0)

Is fatty15 vegan?

Yes, Fatty15 is 100% vegan and contains zero animal byproducts.


Does fatty15 replace omega3?

In an intense peer-reviewed scientific study comparing fatty15 to omega-3, fatty15 was found to be 3x better and safer at restoring cellular health compared to the purest and highest performing omega-3 (EPA).

Claimed Benefits:

Promotes stronger energized cells so you feel healthier and age more efficiently

Best results timeframe:

90 Days


Starting at $49.95 for a 30 day supply

Avg. User Rating:

4.7/5 (Over 370 reviews0

FHM Rating:

4.5/5 ⭐

Introducing fatty15

fatty15 supplement and capsules

Fatty15 is a C15:0 fatty acid supplement that’s designed to help you achieve a healthier body and mind. C15:0 is an essential fatty acid that your body needs in order to preserve your health as you age. Fatty15 is a science-backed, award-winning supplement that’s proven to support your long-term health and wellness.

It’s a once-daily supplement that works to fight age-related breakdown, including strengthening your cell membranes, keeping your mitochondria working properly, and naturally activating receptors throughout your body that regulate functions like your immunity, metabolism, moods, appetite, and sleep.

Taking fatty15 as part of your supplement routine has been shown to promote healthy metabolism, balanced immunity, and improved heart health. Plus, two out of three customers have reported short-term benefits that include a calmer mood, deeper sleep, and less snacking within six weeks of consistent use.

Fatty15 contains only one ingredient: pure C15:0 in powder form. C15:0 is the first essential fatty acid to be discovered in over 90 years.

Brand Background and Mission

Fatty15’s founders, Eric Venn-Watson, MD, MBA, and Stephanie Venn-Watson, DVM, MPH, started the discovery journey after spending time studying dolphins and how to help them age better so that they could live longer, healthier lives.

Stephanie, a veterinary epidemiologist with decades of experience helping dolphins, noticed that, while some dolphins she studied developed age-related conditions like metabolic syndrome, chronic inflammation, high cholesterol, and liver disease, others did not.

This discovery led Stephanie to begin to question why some older dolphins appeared to be protected against aging-related conditions and others weren’t. What she discovered was that the healthiest dolphins had the highest levels of a fatty acid called C15:0, which appeared to protect them from aging-related breakdown.

When the team then supplemented dolphins with additional C15:0 into their diet, they discovered that their health improved. So the question became: could this translate to humans?

The answer: yes! Eric and Stephanie then teamed up to conduct hundreds of clinical trials that proved C15:0 did, indeed, improve metabolic, immune function, sleep, hunger, and more. The result was the creation of fatty15, a pure C15:0 supplement that replenishes your body with this essential fatty acid that you’ve needed all along.

Where is C15:0 Found Naturally?

 C15:0 is naturally found in trace amounts in milk fat as well as in some types of fish and plants. The problem with obtaining C15:0 from these sources is that a high intake of dairy fat will not only increase your levels of good, healthy fatty acids but also your overall fat intake, including some of the fatty acids that aren’t good for you.

Who Should Try Fatty15?

holding fatty15 capsule

Fatty15 is GRAS (generally regarded as safe) certified, which means that it’s safe for children age 4+, women who are pregnant, nursing mothers, and anyone else over the age of 4. Those who are concerned with their long-term health and longevity might consider adding Fatty15 to their daily supplement routine as a way to prevent cellular breakdown.

Scientifically speaking, our bodies generally build up until around the age of 30, at which point, our bodies start to break down due to increased cell fragility, less efficient mitochondria, and an imbalance of immune and metabolic systems. By the time we hit our 40s, these changes can begin to result in chronic health conditions with things really becoming increasingly fragile and fatigued by the age of 65.

For anyone who would like to improve their chances of living a longer, healthier and more vibrant life, adding fatty15 will work to restore some of the resilience and energy that your cells lose naturally throughout the process of aging.

How to Take

product box of fatty15 supplement

Fatty15 should be taken with a meal or in your hot coffee in the morning as good fats are typically best absorbed when interested alongside other foods. For best results, you should take fatty15 consistently every day.

How Long Before it Starts Working?

Many fatty15 users report experiencing short-term benefits within the first few weeks of adding it to their supplement routine. These benefits include less snacking, a deeper sleep, calmer mood, less anxiety, improved ability to handle stress, and more energy throughout the day.

For long-term benefits, studies have shown that fatty15 starts working somewhere between 1-3 months of consistent supplement taking. For this reason, the fatty15 team recommends that you purchase the starter kit that contains a 90-day supply so that you have ample time to experience the benefits.

Are There Any Side Effects?

The only side effect reported to date is a reduction in appetite and snacking between meals. Unlike Omega-3s, fatty15 does not contain any oils, therefore the unpleasant side effects associated with omega-3s like fishy breath or GI issues don’t apply to this supplement. 

Fatty15 vs Omega 3s: What’s the difference?

included with fatty15 product box

Both C15:0 and omega-3 fatty acids are fatty acids that can help regulate your immune system and metabolism. However, fatty15 offers a few additional benefits, including the ability to keep your cells resilient again aging-related breakdown. On the other hand, omega-3 fatty acids can increase your cell's susceptibility to breakdown with age.

A recent peer-reviewed, scientific study recently published compared fatty15 to omega-3. The results showed that fatty15 has 36+ cellular benefits across 86% of cell types tested, which is 3x more than omega-3.

Plus, omega-3s are oily, fishy, and required in large doses to be effective. Fatty15 is a pure powder that has no taste or smell and is taken in a small, 100 mg dose per day.

Does it Replace Omega 3s?

Fatty15 doesn’t necessarily replace omega-3s, but it can. Some users opt to continue to take Fatty15 along with their omega-3 supplement to ensure that they are getting all of their essential fatty acid needs covered. 

It’s important to understand that C15:0 and omega-3s are two different types of essential fatty acids. C15:0 is a healthy saturated fatty acid and omega-3s are polyunsaturated fatty acids, but both of them have been proven to be essential for our health. Understanding this, it’s not a bad thing to take both fatty15 and an omega-3 supplement congruently for fatty acid optimization.

That said, if you were to choose between the two fatty acids, C15:0 has been clinically proven to have an additional 26 cell-based benefits when compared directly to omega-3s.

Cost and Where to Buy

fatty15 supplement product image

Fatty15 costs $49.95 for a 30-day trial kit, however, if you purchase a 90-day starter kit, you’ll have options to save. The pricing breakdown is below:

  • 30-day trial kit with subscription: $49.95
  • 90-day starter kit with subscription: $119.95
  • 90-day starter kit without subscription: $149.95

Fatty15 is available directly from the official website. Choosing the subscription option will allow you to save money and get your fatty15 delivered directly to your door so that you can maintain consistency with your fatty acid supplement routine.

Real User Reviews and Feedback

delivery box fatty15 product

Fatty15 is emerging as a top supplement brand, and customers are happy to share their experiences after using it. The product has a 4.7 out of 5 star rating with well over 370 reviews so far, which is pretty incredible considering it is a brand new product as I'm writing this.

2 out of 3 fatty15 customers have claimed to experience the benefits within the first 90 days, citing better moods and better enzyme levels. Overall the reviews of Fatty15 are outstanding and customers are backing up the claims big time.

customer reviews of fatty15

Final Thoughts: Is Fatty15 Worth Adding to Your Supplement Routine?

fatty15 product on table

After digging into the clinical research and the background of Fatty15, it’s abundantly clear that Fatty15 is an incredibly beneficial supplement that’s well-worth adding to your healthy aging supplement routine. The proof is in the pudding, as they say, and the fatty15 team has certainly done their due diligence in proving that C15:0 is an essential fatty acid that not only benefits marine life in the way of dolphins but in humans, too.

Navigating the oversaturated supplement industry can feel overwhelming, and it’s as if we always feel like we’re being pulled in a million different directions. But taking the time to really understand the product, its ingredients, science, and integrity of the brand as a whole can give you the peace of mind and verification that you need to make a decision as to whether it’s in alignment with your goals.

When it comes to healthy aging and living our fittest, healthiest, and most fulfilled lives, fatty15 can certainly play a positive role in our pursuits.

About the Author

Lynn Rose is a super talented mom and Certified Nutritionist with a big passion for sharing knowledge. She spent about 10 years working in journalism, where she learned a lot about writing and telling stories. Lynn also worked in radio for about 3 years, doing all sorts of cool jobs like being on the air, directing programs, helping with promotions, and even designing websites. She has a B.A. in Communications. When she's not writing, Lynn loves to try different products and provide in-depth hands-on reviews.

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