Why Your Energy Gel Is Wrecking Your Gut

And what the industry doesn't want you to know

You've been there.

Mid-race. Legs are good. Head is good. And then — out of nowhere — your stomach turns. Cramping. Bloating. That sudden, urgent need to find a bush.

You blame the heat. You blame your pre-race meal. You blame yourself.

But what if it's the gel?

The Dirty Little Secret in Your Pouch

Flip over almost any energy gel on the market. The first ingredient — or close to it — is maltodextrin.

It's in GU. It's in SiS. It's in most of the gels lining the shelves at your local run store.

Maltodextrin is a processed white powder made by chemically breaking down starch — usually corn, wheat, or potato. It's cheap. It's shelf-stable. It dissolves easily. And it has a glycemic index higher than table sugar — which is why brands love it for quick energy.

But here's the problem. What happens after you swallow it.

What Science Actually Says

Researchers have been quietly building a case against maltodextrin for over a decade. And the findings aren't pretty.

A study published in Cellular and Molecular Gastroenterology and Hepatology found that maltodextrin damages the intestinal environment by stripping away the protective mucus layer that lines your gut — and actively promotes intestinal inflammation. Maurten

That mucus layer matters. It's your gut's first line of defence. Without it, harmful bacteria get direct access to your intestinal wall.

Research from Harvard Medical School and Massachusetts General Hospital showed that maltodextrin impairs your gut's natural anti-bacterial responses and suppresses the defence mechanisms your intestines rely on to stay healthy. Maurten The same research found a striking pattern — as maltodextrin use in processed food rose over the decades, so did the rates of Crohn's disease.

And it gets worse. A 2022 study from Cleveland Clinic found that food additives like maltodextrin enhanced disease severity in inflammation models and were directly linked to mucus depletion and increased gut susceptibility — reinforcing that food additives are not the inert substances the industry treats them as. Fleet Feet

So let's be clear: the FDA says it's safe. Multiple independent research institutions say otherwise.

"But I've Used Gels for Years and Feel Fine"

Fair point. And here's the honest answer.

Most of the damage is low-grade and slow-burning. You're not going to feel it after one gel on a Sunday long run. Research showed that mice fed maltodextrin long-term developed low-grade intestinal inflammation on histology — without obvious symptoms like weight loss or clinical illness. Recovery For Athletes The damage was happening. It just wasn't loud about it.

The problem with silent inflammation is exactly that — it's silent. Until it isn't.

Athletes are also consuming maltodextrin at a higher rate than the average person. You're taking gels every 30–45 minutes for hours at a time, multiple times per week, across a training block that can last months. Research confirmed that orally consumed maltodextrin affects human physiology and gut microbiota in the majority of cases — raising serious questions about whether it belongs in products marketed as healthy performance fuel. Scientific Triathlon

And Then There's Race Day Gut

Here's a stat that should stop you in your tracks.

Studies report that anywhere from 30% to 90% of endurance athletes experience GI symptoms during exercise — and these symptoms are one of the most common reasons athletes drop out of races. Sportsnutritionexperts

Think about that. In some studies, nearly every athlete on the start line will experience some form of gut distress. And the industry's response? "Train your gut." "Take smaller sips." "Practice your nutrition plan."

They'll say anything except: maybe the product is the problem.

In a study of trained triathletes, 7 out of 9 athletes reported GI discomfort when consuming carbohydrates in gel form — while zero athletes reported discomfort from a liquid carbohydrate source of the same amount. Precision Fuel & Hydration

The gel format itself creates problems. And when the gel is loaded with synthetic ingredients on top of that? You're fighting your own body while trying to race it.

The Alternative Isn't Complicated

Your body has been running on real food for a very long time. Dates. Fruit. Natural sugars. Foods that come with their own co-factors — minerals, antioxidants, natural electrolytes — that help your body process them efficiently.

That's exactly why we built 2THRV differently.

Five ingredients. All organic. All whole food. Nothing your body doesn't recognise.

  • Organic maple syrup — fast-absorbing natural glucose and sucrose, with over 50 antioxidants and minerals your muscles actually use
  • Organic dates — natural fructose that hits a different absorption pathway, giving you sustained energy alongside the maple
  • Organic berries — polyphenols that fight the oxidative stress building up in your muscles mid-effort
  • Organic lemon juice — buffers acidity and supports absorption
  • Mineral salt — replaces what you're sweating out, keeps your muscles firing

No maltodextrin. No artificial flavours. No lab-made thickeners. No ingredients you need a chemistry degree to pronounce.

Just food. Engineered to perform.

The Bottom Line

The energy gel industry built its products around what's cheap, shelf-stable and fast to manufacture. They dressed it up in science-sounding packaging and sold it to you as performance fuel.

Meanwhile, the actual science — peer-reviewed, independent, published in some of the most respected gastroenterology journals in the world — has been quietly raising red flags about the main ingredient in almost every gel on the market.

You've spent thousands of hours training your body. You've sacrificed sleep, social events, and sore legs to get to the start line in the best shape of your life.

Don't let a synthetic ingredient strip your gut apart while you do it.

Your fuel should work with your body. Not against it.

[Try 2THRV — whole food endurance fuel with nothing to hide.]

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