What Foods Make You to Fart? When Is Farting Worrisome?
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Let’s clear the air about something: everyone passes gas. The average person does so somewhere between 13 and 21 times per day, whether they realize it or not. It’s a completely normal byproduct of digestion — and yet it’s one of the most under-discussed health topics around, mainly because people are too embarrassed to bring it up.
But excessive gas, painful bloating, or a change in your typical patterns can sometimes signal that something in your digestive system needs attention. Here’s what you need to know.
If gas and digestive symptoms are affecting your daily life, it’s time to have a conversation. CMC Primary Care can evaluate your symptoms, order appropriate labs or testing, and refer you to CMC Digestive Health when a specialist is needed. Existing patients: contact your home office directly. New patients: call 843-347-8000 or schedule online. Find a location near you HERE.
Why Does Gas Happen?
Gas in the digestive tract comes from two primary sources: air you swallow and gas produced by bacteria in the large intestine as they break down food.
Swallowed air (aerophagia) happens constantly — eating, drinking, chewing gum, and even talking contribute small amounts. Most of it is released through burping before it reaches the intestines.
The rest of your gas is generated in the colon, where bacteria ferment undigested carbohydrates — fibers, sugars, and starches that weren’t fully broken down in the small intestine. This fermentation process produces hydrogen, carbon dioxide, and in some people, methane. The result is flatulence.
“Gas itself isn’t a problem — it’s biology,” says Heber Watson, III, DO at CMC Primary Care- Myrtle Trace. “What we pay attention to is whether it’s excessive, painful, accompanied by other symptoms, or represents a change from what’s normal for you, the patient.”
The Foods Most Likely to Make You Gassy
Some foods are consistently linked to increased gas production. They’re not bad foods — many are extremely nutritious — but they do produce more fermentation in the colon.
High on the list:
- Beans and legumes — one of the most well-known gas producers, due to oligosaccharides that the small intestine can’t fully absorb
- Cruciferous vegetables — broccoli, cabbage, Brussels sprouts, and cauliflower are high in raffinose, a complex sugar that ferments readily in the gut
- Onions and garlic — contain fructans, a highly fermentable type of carbohydrate
- Dairy products — lactose is a common culprit; even people without full lactose intolerance may notice more gas from dairy
- High-fiber foods — particularly when introduced quickly after a low-fiber diet; your gut bacteria need time to adjust
- Apples, pears, and peaches — high in fructose and sorbitol, both of which can produce gas
- Carbonated beverages — the bubbles add gas directly to your system
- Wheat and whole grains — the fructans in wheat can be a trigger, especially in those sensitive to FODMAPs
- Sugar alcohols (xylitol, sorbitol, mannitol) — found in sugar-free products; they pass largely undigested into the colon
“This doesn’t mean avoiding all of these foods,” stresses Dr. Watson. “It means understanding your own patterns — and being aware that a sudden dramatic increase in fiber or fermentable carbohydrates will almost always produce more gas, but usually it’s temporary.”
How Much Gas Is Too Much?
As mentioned before, passing gas up to 21 times per day is within the normal range for most people. The number matters less than whether it’s accompanied by other symptoms.
Gas becomes a concern when it is:
- Excessive relative to your normal baseline — a sudden significant increase is worth noting
- Foul-smelling in a way that’s new or unusual — occasional odor is normal; a persistent, severe change may indicate a digestive issue
- Accompanied by abdominal pain, cramping, or distension (visible swelling or bloating of your belly)
- Associated with changes in stool consistency or frequency
- Causing significant social disruption or distress — which is a quality-of-life issue worth addressing regardless of severity
When Excessive Gas Is a Warning Sign
In many cases, gas is tied to something you ate or a habit that’s easy to change. But it can also be a clue to an underlying digestive condition. Some of the most common include:
Irritable Bowel Syndrome (IBS) IBS is one of the most common digestive disorders and almost always involves gas and bloating. It also typically includes alternating constipation and diarrhea, abdominal cramping, and pain that changes with bowel movements. IBS doesn’t cause structural damage, but it significantly impacts quality of life and benefits from proper management.
Lactose Intolerance When the small intestine lacks enough of the enzyme lactase to break down lactose, undigested lactose travels to the colon and ferments — producing gas, bloating, cramping, and often diarrhea. Symptoms typically appear within 30 minutes to two hours of consuming dairy.
Small Intestinal Bacterial Overgrowth (SIBO) SIBO occurs when bacteria that normally reside in the large intestine grow excessively in the small intestine, where they ferment food before it’s properly absorbed. Gas, bloating, and diarrhea are hallmark symptoms. SIBO is often underdiagnosed and can be confirmed with a breath test.
Celiac Disease Celiac disease is an immune reaction to gluten that damages the lining of the small intestine. Gas and bloating are among its most common symptoms, alongside diarrhea, fatigue, and — in some cases — no obvious symptoms at all.
Inflammatory Bowel Disease (IBD) Crohn’s disease and ulcerative colitis both involve chronic inflammation of the digestive tract. Gas and cramping may be among many symptoms, but IBD typically also involves diarrhea (sometimes bloody), weight loss, and fatigue.
When to See a Provider
Gas alone is rarely a reason to rush to a provider. But you should make an appointment — sooner rather than later — if you experience:
- Gas or bloating that is persistent and doesn’t improve with dietary changes
- Abdominal pain or cramping that occurs regularly
- Changes in bowel habits — diarrhea, constipation, or alternating between both
- Blood in the stool
- Unexplained weight loss
- Nausea or vomiting accompanying digestive symptoms
- Symptoms that are worsening over time
“The digestive system is really good at giving us information — we just have to be willing to pay attention to it,” Dr. Watson notes. “When patients come in with persistent gas and digestive discomfort, there’s almost always something we can identify and help with. Nobody should be suffering through it without answers. If gas is bothering you, don’t be embarrassed to bring it up. We’re doctors — it takes a lot more than that to clear the room.”
If your symptoms point to something that needs a specialist’s eye, your CMC Primary Care provider will refer you to CMC Digestive Health — where a dedicated GI team can provide advanced diagnostics and long-term management for more complex digestive conditions. You don’t have to figure out when to take that step on your own; your primary care provider will help guide that decision.
CMC Digestive Health specializes in the full spectrum of gastrointestinal conditions — from IBS and celiac disease to IBD and beyond. If your primary care provider believes a GI specialist is the right next step, CMC Digestive Health is here. Learn more at conwaymedicalcenter.com/locations/cmc-digestive-health.
No one loves talking about gas — but avoiding the conversation can mean missing something your gut is trying to tell you. Whether it’s a dietary tweak, a food sensitivity test, or a referral to a GI specialist, CMC Primary Care and CMC Digestive Health are equipped to help you figure out what’s going on and how to feel better.
Key Takeaways
- Passing gas up to 21 times per day is within the normal range; gas is a natural byproduct of digestion and bacterial fermentation in the colon.
- Top gas-producing foods include beans, cruciferous vegetables, onions, dairy, carbonated drinks, and sugar alcohols — none of which are inherently unhealthy.
- Gas becomes a concern when it’s excessive relative to your baseline, painful, accompanied by other GI symptoms, or associated with stool changes.
- Underlying conditions like IBS, lactose intolerance, SIBO, celiac disease, and IBD can all present with gas and bloating as symptoms.
- CMC Primary Care is the right first stop for digestive concerns; CMC Digestive Health provides specialized GI evaluation and care.
All content of this article is intended for general information purposes only and is not intended or implied to be a substitute for professional medical advice, diagnosis, or treatment. Please consult a medical professional before adopting any of the suggestions on this page. You must never disregard professional medical advice or delay seeking medical treatment based on any content of this article.
Sources:
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Cleveland Clinic. Gas: Symptoms, Causes and Treatment. https://my.clevelandclinic.org/health/diseases/7314-gas
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Johns Hopkins Medicine. Irritable Bowel Syndrome (IBS). https://www.hopkinsmedicine.org/health/conditions-and-diseases/irritable-bowel-syndrome-ibs
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Mayo Clinic. Gas and Gas Pains. https://www.mayoclinic.org/diseases-conditions/gas-and-gas-pains/symptoms-causes/syc-20372709
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National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). Symptoms and Causes of Gas in the Digestive Tract. https://www.niddk.nih.gov/health-information/digestive-diseases/gas-digestive-tract/symptoms-causes
