--- title: "The Gut Health Trends I Get Asked About Most. Here's What the Evidence Actually Says." entity: "blog" canonical_url: "https://www.drlovink.com/blog/the-gut-health-trends-i-get-asked-about-most-heres-what-the-evidence-actually-says" markdown_url: "https://www.drlovink.com/llms/blog/the-gut-health-trends-i-get-asked-about-most-heres-what-the-evidence-actually-says" lastmod: "2026-04-28T05:56:20.000Z" --- Gut health is having a moment. And with that comes an overwhelming amount of information, products, and protocols being marketed as the answer to chronic digestive symptoms such as bloating, IBS and chronic constipation. Some of it is genuinely useful. But a lot of it isn't. And yet it's often presented with a confidence that the evidence simply doesn't support. I get asked about these many of these topics in my 1:1 practice, in my DMs, and in the comments section of my posts. So I want to address them directly, with the nuance they deserve, so you can stop spending time and money on things that aren't moving the needle and focus on what actually works. So here's my evidence-based "hot take" on several popular gut health topics. OTC Laxatives and Pro-Motility Medications My hot take: Yes. This might surprise people, but I'm a proponent of strategic laxative and pro-motility medication use for chronic constipation. The idea that laxatives are a crutch, or that your gut will become permanently dependent on them, is one of the most persistent myths I encounter in practice. For people with chronic constipation, these medications are often an important part of getting things moving while the underlying drivers are being addressed. They are safe, well-studied, and underused, largely because of stigma that isn't supported by evidence. Fermented Foods My hot take: generally, yes Fermented foods (yogurt, kefir, kimchi, sauerkraut, miso, sourdough) have promising data supporting their role in microbiome diversity and reducing inflammatory markers. Most studies looking at fermented dairy specifically show improvements in GI symptoms. The research isn't definitive yet, but the risk profile is low and the potential upside is small, but real. And one under-appreciated benefit: fermentation breaks down carbohydrates before the food ever reaches your gut. This is meaningful for people who struggle with bloating and gas, because the fermentation process happens outside the body, not inside it. That pre-digestion can make foods like wheat, cabbage, and dairy significantly easier to tolerate. I generally support including fermented foods as part of a gut-friendly diet. Olive Oil Shots in the Morning My hot take : Sure, I can get behind it. There is evidence that fat intake in the morning stimulates the gastrocolic reflex, the signal that prompts your colon to contract and move things forward. Is olive oil a magic solution? No. Is it a low-risk, reasonable thing to try as part of a morning motility routine? Yes. Colonics My hot take: No. The claims that colonics remove toxins, improves "vitality", or prevens chronic disease have no support from controlled trials (the kind of research we want to feel confident an intervention actually helps and doesn't harm). None. In fact, a systematic review found no rigorous data behind any of these claims and instead found real documented risks: bowel perforation, electrolyte imbalances, infection, and disruption of the mucosal barrier in ways that may actually increase bacterial absorption rather than reduce it. There are narrow medical contexts where bowel irrigation has shown some benefit, specifically in patients with severe neurological bowel disorders or fecal incontinence that has failed all other treatments. But these are medically supervised procedures with specialized equipment. They are not what is being sold at a wellness clinic. The way I look at it is this- there are MANY other safe, effective, and well-studied treatments for chronic constipation that DO work (without all the risk & cost). And if you feel like "nothing has worked"...it's often a strategy problem (the when & how)...that's where I come in ;) Probiotics My hot take: It depends. The research on probiotics is genuinely mixed and highly strain-specific. The probiotic that helped your friend may do nothing for you, and the evidence supporting specific strains for specific conditions is far more limited than the marketing suggests. What concerns me most in practice is the trial and error involved. Most people who come to see me have already spent significant money on supplements that didn't work. Probiotics add another variable to that cycle. And they are not without risk: certain strains can worsen bloating and gas, particularly in people with slow motility or incomplete evacuation. I don't recommend them universally, and I'm skeptical of how broadly they're marketed for gut health. Screening for Disordered Eating Before Making Dietary Recommendations My hot take: Non-negotiable yes. A significant proportion of people with chronic gut symptoms have a complicated relationship with food, often without fully recognizing it. Orthorexic patterns, restriction, and food fear are common in this population and are frequently normalized or even reinforced by wellness culture. Putting someone on an elimination diet without first screening for disordered eating patterns can cause real harm. This should be standard practice in gut health care. It isn't yet. GI Map and Microbiome Testing My hot take : Hard no. I understand the appeal. When you've been dealing with chronic symptoms and conventional testing keeps coming back normal, the idea of a detailed map of your microbiome feels like it might finally provide answers. But the biggest problem is the results of these tests don't provide information that we can actually act, over and above what we would do with you anyways (aka. increase your fibre, etc). The microbiome science is genuinely exciting, but we are not yet at a point where commercial microbiome testing reliably guides treatment in a meaningful way. Fibre Powders My hot take : It depends. Fibre powders are not categorically wrong, but they are frequently misused. Psyllium husk has good evidence for IBS and constipation and is one I do recommend in specific contexts. Inulin-based powders are a different story: they are highly fermentable and can be brutal for someone dealing with bloating and gas. The type of fibre, the dose, and what someone is actually dealing with all matter enormously. Fibre from whole food sources is almost always preferable. But if a powder is being used, the type needs to match the clinical picture. Fibre Sufficiency and Diversity My hot take : Heck yes, but with strategy. This is one of the most important things I work on with patients, and one of the most commonly mishandled pieces of gut health advice. More fibre is not simply better. The type matters. The amount matters. How quickly it was introduced matters. And what the gut was already dealing with before you started matters enormously. Adding fibre without a strategy can make things significantly worse before they get better, which is exactly why so many people conclude that fibre doesn't work for them when the real issue was the approach. All Chronic Gut Symptoms Are SIBO My hot take : No. SIBO (small intestinal bacterial overgrowth) is a real condition. But it is genuinely over-diagnosed. Part of the problem is the testing itself. Breath tests for SIBO have a high false positive rate, which means many people are being treated for something they don't actually have. The antimicrobial protocols used for SIBO treatment are not without consequence, and treating for SIBO when it isn't the problem is a waste of time, money, and often sets people back. Not everyone with bloating has SIBO. Not everyone with constipation has SIBO. And in my experience, when we work on motility & clear the back up FIRST, the problem we thought was SIBO often goes away. IBS and Other Disorders of Gut-Brain Interaction Are Legitimate Diagnoses My hot take: Fully, unequivocally yes. This one matters to me. Disorders of gut-brain interaction (DGBIs), which include IBS, functional constipation, and 30 other recognized conditions, affect approximately 40% of the population. They are not diagnoses of exclusion. They are not a way of saying "we don't know what's wrong." They have established diagnostic criteria, well-researched clinical pathways, and effective treatments. The problem is that most people who receive these diagnoses are never given a proper explanation of what they actually mean, what's driving their symptoms, or what can be done about it. That is a failure of the healthcare system, not the diagnosis. Food Sensitivity Testing My hot take: Big fat no. The evidence for IgG food sensitivity testing is not there. These tests consistently produce false positives, lead to unnecessary food elimination, and in my experience contribute significantly to the food fear and restriction that makes chronic gut symptoms worse, not better. A growing list of foods to avoid is not a treatment plan. The Common Thread Very few things in gut health are categorically good or bad. Most of them depend on what you're actually dealing with, where you're starting from, and what else is going on. The trendy and the popular are not always the most effective, and in many cases they actively get in the way of treatments that have real evidence behind them. My job is to help you cut through the noise and focus on what actually works for your gut specifically. Come Learn More About the Nuance of Fibre Fibre is one of the best examples of how context-dependent gut health information is. It's one of the most universally recommended things for gut health, and one of the most commonly misapplied. Which is exactly why I wanted to dedicate a whole conversation to it. On May 14th (12:30–1:30 PM PST) , I'm hosting a Zoom workshop with registered dietitian Ali Ellis on the nuance of fibre: - why it's so challenging for so many people - how to actually make it work for you - how to overcome the most common barriers - and an opportunity to bring your questions live. Ali will also be doing a live demonstration of what adequate daily fibre actually looks like, giving you some meal prep, grocery shopping ideas & recipes to take away Tickets are $40. [More information and registration details here.](/fibre-without-the-frustration-real-life-strategies-for-sensitive-guts/home)