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Most modern adults don't have enough of it. Here's what to do.
Hi, it's Sarah — Goodness Lover co-founder. Here's the study that made me rethink everything I thought I knew about weight.
In 2013, a lab at Washington University in St. Louis took pairs of adult twins where one was lean and one was obese. Then they transferred each twin's gut bacteria into separate groups of germ-free mice. The mice ate the same food. Lived in the same cages. Same temperature, same calories, everything.
Same food. Different bacteria. Different bodies. Your weight isn't just what you eat — it's what your bacteria do with what you eat.
Ridaura et al. · Science · 2013 · Jeffrey Gordon's lab, Washington University in St. Louis
But of the trillions of bacteria in your gut, one keeps showing up at the centre of the lean-vs-obese story.
The keystone bacterium scientists associate with being lean. Even the name tells you what it does: Akkermansia, after Antoon Akkermans (Dutch microbial ecologist). Muciniphila, from the Greek for "mucin-loving."
What's a keystone species? An ecology term — one species whose effect is disproportionate to its size. Pull it out, and the structure shifts. Sea otters in a kelp forest. Wolves in Yellowstone. Small populations, outsized effects. In your gut, that's Akkermansia.
People with low levels... the opposite. Across separate labs over the last decade, Akkermansia keeps showing up at the centre of the metabolic story.
Here's what I keep coming back to when I talk to our community... if you've been doing all the "right things" and not getting the results you used to, this is the part most health content skips.
Akkermansia naturally declines with age. The research is consistent: lower levels in your 50s than your 30s, lower in your 60s than your 50s. It's not a cliff. It's a gradual erosion.
If you've taken any course of antibiotics in the last decade — and most of us have — Akkermansia took a major hit. Some studies show it can take six months or more to recover, and that's if you're feeding it the right things. And when Akkermansia drops, the species that compete with it tend to overgrow... taking up the space it would otherwise occupy.
Most Western diets are heavier on protein and refined carbohydrates, lighter on colourful plants. That means fewer polyphenols — which means the mucin layer Akkermansia lives in is probably thinner than it should be.
The gut you have today is not the gut you had at 25.
The good news: the microbiome is responsive. With the right inputs, can shift in weeks, not years.
Not the upper colon — the distal colon. A 2016 lab study modelling the human gut found Akkermansia colonising the distal compartment about 10,000× more abundantly than the upper one.
Akkermansia eats the mucus...
...and signals your gut to make more of it.
Self-regulating loop. The more Akkermansia you have, the more habitat it builds. The thicker the mucus layer, the healthier your gut barrier — and the less inflammation, less leaky gut, less food for the bacteria that drive weight gain.
So if you've been adding fiber and nothing changed — here's why.
You were almost certainly using the wrong kind — the kind that never reaches the distal colon where Akkermansia actually lives. It wasn't your fault.
Right intention, wrong delivery zone.
Mucus is both food and home. But Akkermansia thrives faster when it also gets two specific inputs from your plate.
Both survive the upper colon. Both reach the distal colon. Together, they compound.
The compounds that give plants their colour. They survive digestion and the upper colon, reach the distal colon, and multiple studies show they raise Akkermansia abundance. They also signal your gut to make more of the mucin layer Akkermansia lives in.
Not all fiber. The specific kind that ferments gradually — no rapid burst in the upper colon — survives the journey down to the distal colon, and gets to where Akkermansia actually lives. The fiber from the clinical trial below.
Two pathways. Same target. They compound.
Most prebiotic supplements are one fiber and a story. This is an architecture — built around feeding, protecting, and supporting the keystone bacterium your microbiome science has been converging on for a decade.
Full ingredient walkthrough below.
The three active workhorses of the formula — two prebiotic fibers that feed Akkermansia and the beneficial bacteria that work alongside it, and a clinically-studied phage blend that clears the way for those species to establish.
The slow-fermenting fiber from the clinical trial. Reaches your large intestine intact. Feeds your beneficial bacteria gradually rather than producing the gas burst most fiber supplements cause. Directly raises Akkermansia at the clinical dose.
A second-pathway prebiotic. Grows Bifidobacteria that work alongside Akkermansia in the same gut ecosystem, and raises Akkermansia directly. Two fibers, two routes, one target.
Phages are nature's microbiome editors — naturally occurring particles found in fermented foods, soil, and the gut itself. PreforPro is a clinically-studied blend of four phages that selectively trim competitive bacteria without touching the beneficial species. Clears the way for Akkermansia and Bifidobacteria to establish.
The two ingredients that round out the formula — soothing the gut lining and supporting the broader microbiome environment so the primary actors can do their work.
A traditional demulcent used for generations to soothe irritated digestion. When mixed with water, its inner-bark polysaccharides form a gel-like mucilage that gently coats the gut lining. Laboratory studies also suggest those same polysaccharides may feed beneficial bacteria — including Bifidobacterium, Lactobacillus, and Bacteroides species linked to gut health.
A naturally chelated source of trace minerals from ancient plant deposits — the kind of minor minerals modern diets tend to miss. Emerging research also points to supporting effects on the wider gut environment.
A note on what's not in this: this isn't a replacement for eating colourful plants. It works with a polyphenol-rich diet — berries, pomegranate, dark grapes, green tea. Both pathways feed Akkermansia. Together they compound.
One of the most interesting things I've noticed about this formula... people often notice changes in a similar order.
Not everyone experiences it the same way, of course. But across more than one hundred reviews from our community, a pattern keeps showing up:
First the bloating improves. Then digestion becomes more regular. Then, with consistency, some women start noticing broader changes — including changes on the scale.
Here's how that pattern often unfolds.
This is usually the first thing people notice. The slippery elm and Sunfiber start working almost immediately to soothe the gut and support regularity. Many people report less bloating within days.
"After three days of taking Better Gut Prebiotic Fiber Plus, the stomach problems I had experienced for months subsided. Within two weeks, they had cleared up completely."
"After trying many recipes, herbal and OTC remedies, I thought I'd never find a solution for my constipation problem. Easy to take and worked within a few days. I won't be without it!"
As your gut bacteria adjust to the daily prebiotic fuel, digestion often starts to feel more consistent and comfortable.
This is when many women begin describing a flatter stomach, less heaviness, and a more noticeable sense that their digestion is finally working with them instead of against them.
"I have suffered with bloating, smelly gas, constipation, and IBS for over 20 years. Nothing has gotten rid of the bloating until now. It took about 2-3 weeks before all of my symptoms began to decrease. The biggest difference was my flat stomach in the morning and throughout the day."
This is where the deeper benefits of daily prebiotic support can start to show up.
By this stage, the daily prebiotic has given Akkermansia and the supporting bacteria more time to establish — and the broader pattern people describe at this point tends to be different from the early weeks. Less bloating that stays gone. Mornings feel cleaner. The scale starts moving for some women, often alongside better energy and a more predictable sense of digestion overall.
This is also the stage where we start hearing about changes that weren't even what people were looking for when they started.
"Bloating is way down and I'm losing weight without even trying. Joint pain is lessened and energy is increased. I can't believe how much difference it has made."
"I've lost 12 Pounds already and feel healthier than I have in a long time."
Individual results may vary. These are personal experiences shared by members of our community.
This is a daily prebiotic that gradually shifts which bacteria are dominant in your gut. Short-term effects show in weeks. Deeper composition shifts take months. The longer you stick with it, the more your microbiome has time to adapt.
Not a weight-loss drug. It won't replace eating reasonably. If you're expecting twenty pounds in thirty days, this isn't that — and anyone selling you that story is selling you something else.
What it is, is a daily prebiotic that gradually shifts the bacteria producing the compounds that change how your body handles food. Slower. Realer. More durable.
Across two decades, the same conclusion keeps showing up — in different labs, with different methods, on different populations.
Mouse-to-mouse transfer in Jeffrey Gordon's lab at WashU. Bacteria alone, without any change in diet, could drive obesity in otherwise identical animals. The first clean answer to "do gut bacteria affect weight?" — yes.
The twin study you saw above. Same lab, seven years later, this time with human donors. The mouse outcome held: lean twin's bacteria → lean mice. Obese twin's bacteria → obese mice. The finding wasn't a fluke.
Healthy adults. Fourteen days. The exact slow-fermenting fiber that's the workhorse of Better Gut. At both 3g and 6g daily doses, Akkermansia rose significantly versus placebo (p = 0.0081 and p = 0.0083).
Specific fiber. Specific bacterium. Fourteen days.
"If you're concerned about maintaining a healthy balance of good bacteria and want them to thrive, this is a wonderful choice."
Dr. Peter Bongiorno, ND
Naturopathic Physician
Verified buyer reviews. All on the offer page. These are the ones that capture the pattern cleanest.
"Since taking Better Gut Prebiotic Fiber Plus I have noticed more regularity in my bowels and have shaved off those last few pounds that were lingering."
"An enormous improvement with the gas and I'm regular for the first time in a long while. I feel so much better."
"I've tried so many other prebiotics and this is the only one that really helps me stay regular. I just feel healthier with it as a part of my daily routine."
"This supplement has been very helpful with keeping my GI system in balance, especially when I am travelling and having to shift my diet and activity levels. I add it to my morning cup of tea and let it work its wonders!"
I went through our entire bonus library and picked the pieces that pair most directly with what you're doing on Better Gut. The 3-bottle tier gets a starter pair. The 6-bottle tier gets the full stack — plus one physical bonus for the first 100 buyers.
100% whole food plant-based. The protocol turned into a daily routine — watchable, repeatable, designed for real kitchens.
The full picture of your microbiome — digestive anatomy, the role of beneficial bacteria, the mucus layer, dysbiosis, and the practical strategies that compound with the supplement. Print it, save it, come back to it.
Everything you need to know about building long-term resilience against illness and disease. The masterclass companion to the protocol — sixteen modules, deep-dive science, the body of work we've spent a decade producing.
Breakfast, lunch, dinner, sides, sweet things. Berries, pomegranate, beetroot, dark grapes, kale, sweet potato — the polyphenol-rich foods Akkermansia thrives on, built into daily meals. Shopping lists included. The 6-bottle runway lets you cycle through it six times.
Ships with your first order. Once we hit 100 buyers on the 6-bottle tier, it disappears from this page.
Ask our naturopath team anything about your gut, the protocol, what to expect — get a personalised response from a qualified practitioner. Normally $47/month if bought standalone. Included with every Better Gut tier this week, including the 1-bottle Starter.
Third-Party Tested
Vegan
No Fillers
No CompromisesThe formula, the education, and the support — all backed by a 30-day money-back guarantee.
What disappears at midnight Sunday ET
33% off the 6-bottle until midnight Sunday, ET. After cart closes, the recurring 25% subscription rate is the best ongoing price — and the Masterclass, Meal Plan, and Tumbler aren't included.
If I were to recommend one... it's the 6-bottle. Longer consistent use gives your microbiome more time to adapt, and this is the deepest discount we've ever offered on Better Gut.
Try it for 30 days. If the bloating hasn't improved, if your digestion hasn't started getting more predictable, email us and we'll refund you. No forms, no fuss, no hoops. The guarantee is there for exactly this moment — the hardest part of any of this is starting.
Real customers, in their own words.
After that, three things happen.
— The bonus stack (up to $726 depending on tier) goes back into the vault.
— The 6-bottle subscription pricing disappears. It's the deepest discount we've ever offered on Better Gut, and it's not coming back at this price this year.
— If you're in the first 100 on the 6-bottle option, the Just Peachy Tumbler ships with your first order. Once we hit 100, it's gone.