When fitness enthusiast and content creator Stash stumbled upon a 2024 study claiming participants lost an average of 6.2 pounds over eight weeks using resistant starch—with MRI scans showing disproportionate visceral fat loss—he decided to test it himself for 90 days.
The catch? No calorie cutting. No exercise changes. Just 70 grams daily of a white powder called high-maize resistant starch.
His results were shocking, though not exactly in the way he expected.
And the side effects? Let’s just say his social life took a hit.
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What Exactly Is High-Maize Resistant Starch?
High-maize resistant starch is a specialized dietary starch made from traditionally bred, non-GMO high-amylose corn. Unlike regular cornstarch that breaks down quickly into glucose, this particular starch contains 50 to 70% amylose—a slow-burning carbohydrate.
Think of amylose like a slow burning log in a fire. While regular starch is kind of like crumbling up a newspaper and throwing it on fire, burns instantly.
This specialized starch passes through the lower intestine without breaking down, acting like dietary fiber in the large bowel. The portion that does get processed releases glucose gradually into the bloodstream, preventing blood sugar spikes.
If you want something simple that actually works, this is one of the most effective tools I’ve used to build strength, conditioning, and endurance without needing a full gym setup.
- Full-body training with one weight using swings, squats, and presses
- Solid cast iron build that feels stable and lasts for years
- Comfortable grip that makes high-rep workouts easier to handle
Research suggests it improves gut health, lowers blood sugar responses, and supports metabolic health. Foods like basmati rice, jasmine rice, beans, and lentils also contain amylose, though typically in lower concentrations.
The 90-Day Protocol
Stash tracked down High-Maize 260 resistant starch—the specific type used in the study—ordering 15 pounds from one of the few distributors selling smaller quantities. Commercial bulk purchases often come in 40-pound bags costing hundreds of dollars.
Why 70 grams when the study used 40? The study referenced 40 grams of pure resistant starch. Since high-maize resistant starch contains roughly 60% resistant starch and 40% digestible starch, reaching that 40-gram target required 70 grams total.
Building Up Slowly
Rather than jumping straight to the full dose, Stash spent one week gradually building up: 5 grams, then 10, then 15, before reaching 70 grams daily. Smart move, considering what came next.
The Side Effects Nobody Warned Him About
By day two at full dose, Stash noticed something different happening with his digestive system.
The gas is insane. I’m just farting nonstop. This is the toughest thing I’ve done.
The excessive gas persisted throughout the entire 90-day experiment. According to what Stash read, this supposedly meant the starch was doing its job—feeding the gut microbiome.
If you want something simple that actually works, this is one of the most effective tools I’ve used to build strength, conditioning, and endurance without needing a full gym setup.
- Full-body training with one weight using swings, squats, and presses
- Solid cast iron build that feels stable and lasts for years
- Comfortable grip that makes high-rep workouts easier to handle
Interestingly, he noticed his bowel movements became remarkably consistent and well-formed. After researching this somewhat disturbing development, he discovered it might actually be a positive sign of improved gut function.
Within three days of stopping the resistant starch, the gas subsided completely. Relief at last.
The Cholesterol Results: A Pleasant Surprise
Stash has dealt with hereditary high cholesterol his entire life. As a child, he took statins mixed into applesauce. Despite maintaining a solid diet and exercise routine as an adult, his numbers remained stubbornly elevated.
The study predicted a 5 to 10% drop in total and LDL cholesterol. His results exceeded expectations:
- Total cholesterol: Dropped from 265 mg/dL to 236 mg/dL
- LDL cholesterol: Fell from 185 mg/dL to 158 mg/dL
That’s a 27-point drop in LDL—far more than the study predicted. While still elevated, these numbers gave him genuine hope for managing his cholesterol without medication.
That’s a huge drop. My cholesterol is still high, but that drop gives me some promise, some hope.
The Body Composition Shocker
Here’s where things got interesting. Stash gained 4.3 pounds during the experiment, weighing 170.4 pounds at the final DEXA scan compared to his starting weight around 165-166 pounds.
If you want something simple that actually works, this is one of the most effective tools I’ve used to build strength, conditioning, and endurance without needing a full gym setup.
- Full-body training with one weight using swings, squats, and presses
- Solid cast iron build that feels stable and lasts for years
- Comfortable grip that makes high-rep workouts easier to handle
Not exactly the visceral fat-melting miracle the study suggested.
Visceral Fat: Minimal Change
Visceral fat increased slightly from 0.96 pounds to 1.19 pounds—a gain of 0.23 pounds. Disappointing, but there’s an important caveat to consider.
Muscle Mass: The Unexpected Winner
Lean muscle mass increased from 125.8 pounds to 130.3 pounds—a gain of 4.5 pounds over three months. This was especially surprising given that Stash started marathon training during the experiment.
Conventional wisdom suggests building muscle during high-mileage running is difficult due to cortisol elevation and the catabolic nature of endurance training.
Overall body fat percentage dropped from 20% to 19.4%—a modest but measurable improvement.
Why Results Differed From The Study
Several factors may explain why Stash’s experience diverged from the published research:
If you want something simple that actually works, this is one of the most effective tools I’ve used to build strength, conditioning, and endurance without needing a full gym setup.
- Full-body training with one weight using swings, squats, and presses
- Solid cast iron build that feels stable and lasts for years
- Comfortable grip that makes high-rep workouts easier to handle
- Study participants were obese: The original research used participants with significantly higher body fat percentages
- Marathon training interference: Starting marathon training mid-experiment introduced variables like elevated cortisol and increased caloric needs
- Already lean baseline: At 20% body fat, Stash had less visceral fat to lose compared to obese participants
- Muscle gain offset: Significant muscle growth may have masked fat loss on the scale
Stash attempted to control for DEXA scan variability by tracking water intake, carbohydrate consumption, and workout timing before both scans. Despite these efforts, marathon training remained a significant confounding variable.
The Verdict: Worth It?
When asked if he’d repeat the full 90-day protocol, Stash’s answer was immediate and definitive.
No. The gas was horrible.
However, he didn’t abandon resistant starch entirely. After taking a week off post-experiment, he resumed at 35 grams of high-maize starch daily—roughly 15 to 20 grams of actual resistant starch.
This is considered the minimum effective dose according to research, still providing benefits without the intense side effects:
- Insulin sensitivity improvements persist
- Gut microbiome continues receiving nourishment, just at a slower colonization rate
- Cholesterol reduction continues gradually over time
- One meta-analysis showed LDL effects required around 16 grams of resistant starch daily
His goal? Normalize cholesterol levels over the course of a year through sustained, lower-dose supplementation.
Practical Takeaways For Readers
Resistant starch isn’t some exotic supplement only available in bulk quantities. Many common foods naturally contain amylose and resistant starches:
If you want something simple that actually works, this is one of the most effective tools I’ve used to build strength, conditioning, and endurance without needing a full gym setup.
- Full-body training with one weight using swings, squats, and presses
- Solid cast iron build that feels stable and lasts for years
- Comfortable grip that makes high-rep workouts easier to handle
- Basmati and jasmine rice
- Beans and lentils
- Green banana flour
- Cooked and cooled potatoes
- Oats (particularly overnight oats)
You don’t need to commit to 70 grams of pure resistant starch daily to see potential benefits. Incorporating more naturally resistant starch-rich foods into your diet offers a gentler approach with fewer side effects.
For those with high cholesterol, the dramatic LDL reduction Stash experienced suggests resistant starch deserves consideration—especially for people seeking alternatives to statin medications.
For visceral fat loss, results appear more promising for individuals with obesity rather than those already at moderate body fat levels.
The Bottom Line
High-maize resistant starch delivered impressive cholesterol improvements but failed to produce the dramatic visceral fat loss suggested by initial research—at least for someone already relatively lean who started marathon training mid-experiment.
The unexpected muscle gain raises intriguing questions. Could resistant starch support muscle protein synthesis or recovery? Further research would be needed to establish any causal relationship.
As for the gas? That’s apparently the price of admission at higher doses. The minimum effective dose of 15-20 grams appears to be the sweet spot—enough benefit without turning yourself into a social pariah.
If you want something simple that actually works, this is one of the most effective tools I’ve used to build strength, conditioning, and endurance without needing a full gym setup.
- Full-body training with one weight using swings, squats, and presses
- Solid cast iron build that feels stable and lasts for years
- Comfortable grip that makes high-rep workouts easier to handle
Resistant starch isn’t a miracle belly fat solution. But for cholesterol management and gut health, especially at moderate doses, the evidence looks genuinely promising.
