Gut health is having a moment. From “fibermaxxing” taking over social media to probiotics lining store shelves, it seems like there are a hundred different ways to support your gut health.
Your gut does a lot more than digest food. It influences everything from your immune system to mood and even your energy levels. So, it makes sense that people are looking for ways to support it. But with so much information (and misinformation) out there, how do you know which gut health trends actually work and which are myths?
Let's break down the most popular gut health trends, what actually works and the foundational habits that actually improve your gut health.
Your gut is home to trillions of bacteria, fungi and other microorganisms that make up your gut microbiome. Think of it as a bustling ecosystem that, when balanced, keeps your digestive system running smoothly, your immune system strong and can even influence your mental health through the gut-brain connection.
When your gut microbiome is out of balance, a condition known as dysbiosis, you may experience digestive issues like bloating, constipation or diarrhea. Over time, an unhealthy gut can affect how your entire body feels.
So how can you support your gut health? Let’s look at some of the most talked-about trends and separate fact from fiction.
The best ways to support gut health aren't trendy—they're foundational habits backed by decades of research. Eating a variety of fiber-rich foods, staying hydrated, managing stress and getting enough sleep all play important roles in maintaining a balanced gut microbiome.
Everything else—from supplements to fermented foods—may offer additional benefits for some people, but these basics should come first:
Now that we've covered the basics, let's look at some of the most talked-about gut health trends, and what the evidence actually says about each one.
Related: Can stress cause stomach problems?
Fibermaxxing—intentionally increasing fiber intake to “feed” gut bacteria—has gained traction for many reasons. The main one being: Fiber plays a key role in gut health, and most adults don’t get enough of it.
Eating more fiber can support digestion, improve gut bacteria and help regulate blood sugar and cholesterol levels. But if you’re increasing your intake, it helps to understand the different types of fiber and why both matter for gut health.
Soluble fiber dissolves in water and forms a gel-like substance in the gut, which helps nourish beneficial gut bacteria and may also help lower LDL ("bad") cholesterol, support blood sugar control and improve digestive upset by absorbing excess water. Good sources include:
Insoluble fiber doesn’t dissolve in water. Instead, it adds bulk to stool and helps move food through the gastrointestinal tract, supporting regular bowel movements and overall digestive health. Common sources include:
Suddenly increasing your fiber intake, especially from supplements or large portions of fiber-rich foods, can cause bloating, gas and discomfort—particularly if your gut isn’t used to it.
What works is gradually increasing your fiber intake from whole foods and focusing on variety. What doesn’t work: drastically increasing your fiber intake overnight or relying heavily on fiber supplements without adjusting slowly.
Fibermaxxing can be beneficial when done thoughtfully, but in most cases, a steady, food-first approach works better than extreme trends.
One of the most well-known gut health trends is taking probiotics. Probiotics are live microorganisms that can support the balance of bacteria in your gut. You'll find them in supplements and fermented foods like yogurt, kefir and kimchi.
Research shows that certain strains of probiotics may help with digestive issues like irritable bowel syndrome (IBS), diarrhea and bloating. They may also support immune function in some people.
It’s important to note that not all probiotics do the same thing. Different strains affect your health differently, and what helps one person may not help another. For those without digestive symptoms, probiotic supplements may offer little benefit.
Probiotics can help in certain situations, but they’re not a universal solution. If you’re thinking about trying a supplement, it is generally recommended to look for probiotics that contain at least seven different strains of bacteria listed on the label and provide at least 10 billion CFUs (colony-forming units).
And because probiotics aren’t one-size-fits-all, it’s still always a good idea to talk with your healthcare provider about whether one makes sense for you.
Fermented foods have been part of traditional diets for centuries, and modern research backs up their benefits. Foods like sauerkraut, kombucha, miso, tempeh and yogurt contain naturally occurring probiotics.
Studies show that regularly eating fermented foods may improve gut bacteria diversity, reduce inflammation and even support mental health. Plus, they add flavor and variety to your diet, which makes them easier to stick with long-term.
You don’t need large amounts. Even small servings, like a yogurt at breakfast or a spoonful of sauerkraut on your sandwich, can make a difference over time. If you're new to fermented foods, start slowly. Temporary bloating or gas can happen as your gut adjusts.
L-glutamine is an amino acid that's naturally found in your body and is used to help maintain the lining of the intestines. It’s also found in foods like meat, fish, eggs and beans.
Some studies suggest L-glutamine may support gut barrier function in people with certain medical conditions, like inflammatory bowel disease (IBD) or after intensive medical treatments.
But for most healthy people, there's limited evidence that supplementing with L-glutamine offers significant benefits.
Your body typically makes enough on its own. If you're dealing with ongoing digestive symptoms, a gastroenterologist can help determine whether L-glutamine or another approach is appropriate.
Related: Living with IBD symptoms: Tips for a happier, healthier gut
Bone broth has become a wellness staple, with claims that it supports gut health, reduces inflammation and boosts collagen production. It contains collagen, gelatin and amino acids.
While these nutrients sound promising, there’s limited scientific evidence that bone broth alone significantly improves gut health or repairs the gut lining.
That doesn't mean bone broth is a bad choice. It can be a nourishing, hydrating addition to your diet, especially if you enjoy it. But it's not likely to resolve complex digestive issues on its own.
If you're curious, try making it at home or buying a high-quality version.
Apple cider vinegar has been touted as a gut health cure-all. Some people take it before meals, believing it supports digestion or balances blood sugar levels.
What does the research say? There's limited evidence that apple cider vinegar directly improves gut health. It may help with blood sugar control after meals in some people, but the effects are modest.
On the downside, drinking undiluted apple cider vinegar can damage tooth enamel and irritate your throat or stomach. If you want to try it, always dilute it in water and limit how often you use it.
Is it worth adding to your routine? It's not harmful in moderation, but it's also not a game-changer.
With new gut health trends popping up constantly, it's easy to feel overwhelmed. The truth is, if something sounds too good to be true—like a single supplement that promises to transform your digestion overnight—it probably is.
The best way to improve gut health is to focus on fiber-rich foods, sleep, stress management and hydration first. Supplements and gut health trends may help in specific situations, but they work best when built on these basics. From there, you can experiment thoughtfully with trends that fit your lifestyle and feel manageable.
Start by asking whether the trend is backed by research or just social media buzz. Remember that everyone's gut is different, so what works for one person may not work for you. And when in doubt, check with your healthcare provider before trying any new supplement or making major dietary changes.
If you're dealing with persistent digestive symptoms like bloating, pain or irregular bowel movements, you don't have to figure it out on your own. A dietitian or digestive specialist can help you understand what's going on and guide you towards a plan that supports your gut and overall health.
Speak to a doctor who can support your gut health journey.
Olivia Odom, MS, RD, LD is a clinical dietitian on the medical staff at Baylor Scott & White Metabolic and Bariatric Surgery – Grapevine.
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