Dietitians Say This Is Why You're Bloated—Here's How to Fix It

Scroll through TikTok for five minutes and you'll find someone swearing that a lemon-water shot, a specific supplement, or a "debloat" smoothie melted their belly in an hour. As a dietitian, I get why these videos rack up millions of views. Bloating is uncomfortable, it's visible, and it feels like there should be a quick fix. But most of what goes viral oversimplifies a genuinely complex process, and some of it can send you down an expensive, unnecessary rabbit hole.

Here's the good news: a lot of bloating is manageable with simple, evidence-based habits. Let's separate the hype from what genuinely works.

First, a helpful distinction. Bloating and visible distention aren't quite the same thing. Bloating is the subjective sensation of pressure, gassiness, or fullness in your abdomen, while distention is a measurable increase in the size of your belly. They often happen together, but not always! Some data suggests that only about half of people with bloating also reported visible distention.

It's also worth knowing that bloating isn't always about having more gas in your gut. In fact, many people who feel bloated don't actually have significantly more gas than usual. Instead, factors like how sensitive your gut is, how your abdominal muscles respond, and how quickly things move through your system can all play a role.

The reassuring part? "Everyday bloating is usually temporary, often follows meals or constipation, fluctuates throughout the day, and improves after passing gas, having a bowel movement, or overnight," says Johannah Katz, M.A., R.D., an Orlando-based registered dietitian. That daily ebb and flow is normal; your belly naturally expands a bit as the day goes on and settles back down while you sleep.

Bloating can stem from many sources, and identifying the cause matters because it shapes what actually resolves it and can help you avoid it in the future. Some of the most common contributors include:

• Food intolerances: If your body has trouble digesting certain carbohydrates, like lactose or fructose, it can lead to bloating and gas.
• Slow transit or constipation: When stool moves through slowly, bloating often follows.
• Your gut microbiome: The balance of bacteria in your gut influences gas production and how your digestive system behaves.
• Stress and the gut-brain connection: Anxiety and heightened gut sensitivity can amplify the feeling of bloating.
• Travel, especially on planes: "Eating unfamiliar foods, crossing time zones, dehydration, prolonged sitting, and lower cabin pressure during flying may all play a role,” says Raksha Shah, M.A., R.D.N., registered dietitian.

These bloat-banishing approaches have solid evidence behind them.

Look at fermentable carbs (FODMAPs).

FODMAPs are a group of fermentable carbohydrates found in foods like onions, garlic, wheat, certain fruits, and legumes. For people with irritable bowel syndrome, studies show that a lower-FODMAP diet can reduce bloating and distention. That said, this is not a forever diet, and it's genuinely tricky to do well. It's best done with a dietitian's guidance so you don't cut out nutritious foods unnecessarily.

Watch the sugar alcohols.

Sugar alcohols like sorbitol, mannitol, and xylitol (common in sugar-free gum, candy, and "diet" products) are poorly absorbed and can promote gas. In people who don't digest them well, cutting back has been shown to ease bloating. If you chew a lot of sugar-free gum or eat sugar-free sweets, this is an easy thing to test.

Slow down at meals.

This is one of the most underrated strategies, and it has nothing to do with what's on your plate. "Eating while distracted, rushed, or in a stressed state can negatively impact your digestion,” says Hennis Tung, M.S., R.D., registered dietitian. “Aim to be present during meals, slow down, and chew food well." Eating quickly means swallowing more air and giving your gut less of a head start on digestion.

This is where TikTok tends to overpromise. Supplements can have their place, but they aren’t going to be the magical fix that many influencers claim they are.

Probiotics are the classic example of nuance. Some formulations have shown a benefit for bloating in research, while others have shown no meaningful effect. The results vary a lot by the specific strain studied. For example, certain Bifidobacterium strains have performed better than others, but a broadly marketed strain failed to beat placebo in the general population. Translation: a probiotic might help, but "probiotics" as a blanket category isn't a guaranteed fix, and the one your favorite influencer promotes may not be the one that was actually tested.

Dietary approaches that reduce fermentation and gas production tend to have more consistent support than any single miracle pill. Professional guidelines treat bloating as something best matched to its cause, using a range of dietary and medical strategies rather than one universal solution. So if a product claims to "fix" everyone's bloating, that's your cue to be skeptical.

Do:

• Eat slowly and chew thoroughly.
• Stay hydrated, especially when traveling.
• Move your body. Even a short walk helps digestion and can ease constipation-related bloating.
• Keep a simple log to spot patterns between foods and symptoms.

Don't:

• Cut out entire food groups on a whim without guidance.
• Assume every supplement labeled "de-bloat" is backed by evidence.
• Rely on laxatives or "detoxes" for regular relief.
• Panic over normal daily fluctuations in your belly.

Most everyday bloating is nothing to worry about, but some symptoms deserve a professional's attention. Reach out to your doctor if your bloating is persistent (not the come-and-go kind), or if it comes with warning signs like unintended weight loss, blood in your stool, ongoing changes in your bowel habits, or a family history of gastrointestinal disease.

Chronic bloating can be linked to conditions like IBS, food intolerances, or issues with gut motility, and these are worth properly evaluating rather than self-treating. A doctor or dietitian can help you find the actual cause, which, in the end, is far more effective than any 30-second video promising an overnight flat stomach.

Medically reviewed byMelissa Prest, R.D., D.C.N.

Registered Dietitian Nutritionist

Melissa Prest, R.D., D.C.N. is a registered dietitian nutritionist and holds a Doctor of Clinical Nutrition degree from Rutgers University. Melissa owns Kidney Nutrition Specialists, a nutrition practice dedicated to helping individuals living with chronic kidney disease, and is the Foundation Dietitian for the National Kidney Foundation of Illinois where she focuses on disease prevention, health education, and nutrition consultation.