Can I just take probiotics for bloating?

Probiotics are not the right first step for bloating in many cases. If you have SIBO (bacteria where they should not be), adding more bacteria can make symptoms worse. We typically remove or rebalance first, then add specific strains during the restore phase.

Is gluten really the problem?

Gluten is sometimes the problem, especially in celiac disease or true non-celiac gluten sensitivity. More often, the issue is the fructans in wheat, which are fermentable carbohydrates that feed bacterial overgrowth. We distinguish celiac, gluten sensitivity, and "wheat as bacterial fuel" with testing and a structured trial.

Do you treat H. pylori?

Yes, we treat H. pylori (a bacterium that infects the stomach and lowers stomach acid). Ideally we use a non-triple-antibiotic approach when possible, since the standard regimens have rising failure rates. H. pylori is a gatekeeper infection that often opens the door for SIBO downstream.

How long does it take to fix bloating and SIBO?

SIBO treatment usually runs 4 to 8 weeks, but restoring motility and rebuilding the microbiome takes 3 to 6 months. Patients often feel meaningfully better within the first 2 weeks of antimicrobial therapy. The long game is keeping the gut moving so the overgrowth does not return.

What is a low-FODMAP diet, and should I follow one?

A low-FODMAP diet temporarily restricts certain fermentable carbohydrates (Fermentable Oligosaccharides, Disaccharides, Monosaccharides, And Polyols). It can quiet symptoms while we treat the underlying problem. We do not recommend it long-term because it starves beneficial gut bacteria over time.

Can stress alone cause bloating?

Yes, chronic stress alone can cause significant bloating. The vagus nerve coordinates digestion, and chronic sympathetic activation slows motility, lowers stomach acid, and disrupts gut bacteria. Many patients see their bloating ease just by addressing sleep, breath work, and stress before any prescription.

Are food allergies the same as food intolerances?

Food allergies involve the immune system, often through IgE (immunoglobulin E) reactions, and can cause hives, swelling, or anaphylaxis. Food intolerances are non-allergic reactions, often through enzyme deficiencies (like lactose intolerance) or fermentation patterns. Bloating is much more often an intolerance than a true allergy.

Should I cut out dairy if I am bloated?

A short trial of dairy reduction can help if lactose intolerance or a dairy fermentation pattern is contributing. Many adults are mildly lactose intolerant. We use it as a 2 to 4 week experiment rather than a forever rule, then reintroduce in a structured way.

What is the migrating motor complex (MMC)?

The migrating motor complex is the "cleaning wave" of muscle contractions that sweeps food residue and bacteria from the small intestine into the colon between meals. It runs about every 90 minutes when you are not eating. Constant snacking, narcotic pain medications, and slow thyroid function all blunt it, which sets up SIBO.

How do PPIs cause bloating?

PPIs (proton pump inhibitors like omeprazole, esomeprazole, and pantoprazole) lower stomach acid, which is one of the body's main defenses against bacteria entering the small intestine. Chronic PPI use is a documented risk factor for SIBO. We work with your prescriber to taper when it is medically safe.

What is the role of bile acids in digestion?

Bile acids are made by the liver, stored in the gallbladder, and released to break down fats. They also help control bacterial growth in the small intestine. Sluggish gallbladder function, post-cholecystectomy changes, or fatty liver can disrupt bile flow and contribute to bloating and bacterial overgrowth.

Can fatty liver cause digestive symptoms?

Yes, fatty liver (now called metabolic dysfunction-associated steatotic liver disease, or MASLD) can disrupt bile production and worsen digestive symptoms. It is also a marker of insulin resistance, which raises systemic inflammation. We screen with liver enzymes, GGT, and sometimes a FibroScan.

What is the difference between hydrogen and methane SIBO?

Hydrogen-dominant SIBO usually presents with diarrhea or normal stool patterns. Methane-dominant SIBO (now called intestinal methanogen overgrowth, or IMO) is associated with constipation. The treatment differs slightly, often requiring a combination antimicrobial approach for methane.

How does the gut microbiome affect mood?

The gut microbiome (the trillions of bacteria in your intestines) helps produce serotonin, GABA, and short-chain fatty acids that regulate inflammation. Disruptions can drive anxiety, depression, and brain fog through the gut-brain axis. Many patients report mood improvement when their gut symptoms resolve.

Can pelvic floor dysfunction cause bloating?

Yes, pelvic floor dysfunction can cause bloating through impaired bowel emptying, especially in patients with constipation. A skilled pelvic floor physical therapist can be transformative. We refer to vetted Philly-area pelvic floor specialists when this is part of the picture.

What is leaky gut, and is it real?

"Leaky gut" is a popular term for increased intestinal permeability, which is a real phenomenon studied in conditions like celiac disease, inflammatory bowel disease, and certain infections. The popular use of the term often outpaces the evidence. We focus on actual, measurable factors like inflammation, food triggers, and microbiome health rather than chasing the label.

How does insulin resistance affect gut health?

Insulin resistance (when your cells stop responding well to insulin) drives chronic low-grade inflammation, which affects the gut microbiome and motility. Patients with metabolic dysfunction often have more bloating, dysbiosis, and food sensitivities. Treating metabolic health usually improves gut symptoms in parallel.

What is the role of stomach acid in preventing SIBO?

Stomach acid is one of the body's main defenses against bacterial overgrowth. It kills bacteria coming in through food and drink. Low stomach acid, whether from PPIs, H. pylori infection, or aging, raises the risk of SIBO. We assess and support stomach acid carefully when needed.

Can endometriosis cause bloating?

Yes, endometriosis (where tissue similar to the uterine lining grows outside the uterus) can cause significant bloating, particularly around the menstrual cycle. The combination of inflammation, adhesions, and altered gut motility is sometimes called "endo belly." We coordinate with gynecology and pelvic floor PT when this is suspected.

What is the role of the vagus nerve in gut health?

The vagus nerve is the main parasympathetic nerve and connects the brain to the gut. It controls motility, digestive enzyme release, and inflammation. Vagal tone, which we can estimate with HRV (heart rate variability) on a wearable, often correlates with gut health. Breath work and cold exposure can support vagal tone.

Can long COVID cause new bloating and food sensitivities?

Yes, long COVID can cause new gut symptoms through autonomic dysfunction (problems with the automatic nervous system), motility changes, and dysbiosis. Many patients develop new SIBO or post-viral IBS after COVID infection. We test, treat, and pace recovery rather than push through.

How do gallbladder issues affect bloating?

Gallbladder dysfunction or removal (cholecystectomy) can disrupt bile flow, which affects fat digestion and bacterial control. Patients post-gallbladder removal sometimes develop bile acid diarrhea or new bloating. We use targeted bile salts, dietary timing, and sometimes prescription bile acid binders.

Is it normal to be bloated during menstruation?

Mild bloating around menstruation is common because of fluid shifts and prostaglandins. Severe or persistent bloating is not normal and may point to endometriosis, hormonal imbalance, or untreated SIBO. We track patterns over 2 to 3 cycles to find the driver.

Can I just take probiotics for bloating?

Probiotics are not the right first step for bloating in many cases. If you have SIBO (bacteria where they should not be), adding more bacteria can make symptoms worse. We typically remove or rebalance first, then add specific strains during the restore phase.

Is gluten really the problem?

Gluten is sometimes the problem, especially in celiac disease or true non-celiac gluten sensitivity. More often, the issue is the fructans in wheat, which are fermentable carbohydrates that feed bacterial overgrowth. We distinguish celiac, gluten sensitivity, and "wheat as bacterial fuel" with testing and a structured trial.

Do you treat H. pylori?

Yes, we treat H. pylori (a bacterium that infects the stomach and lowers stomach acid). Ideally we use a non-triple-antibiotic approach when possible, since the standard regimens have rising failure rates. H. pylori is a gatekeeper infection that often opens the door for SIBO downstream.

How long does it take to fix bloating and SIBO?

SIBO treatment usually runs 4 to 8 weeks, but restoring motility and rebuilding the microbiome takes 3 to 6 months. Patients often feel meaningfully better within the first 2 weeks of antimicrobial therapy. The long game is keeping the gut moving so the overgrowth does not return.

What is a low-FODMAP diet, and should I follow one?

A low-FODMAP diet temporarily restricts certain fermentable carbohydrates (Fermentable Oligosaccharides, Disaccharides, Monosaccharides, And Polyols). It can quiet symptoms while we treat the underlying problem. We do not recommend it long-term because it starves beneficial gut bacteria over time.

Can stress alone cause bloating?

Yes, chronic stress alone can cause significant bloating. The vagus nerve coordinates digestion, and chronic sympathetic activation slows motility, lowers stomach acid, and disrupts gut bacteria. Many patients see their bloating ease just by addressing sleep, breath work, and stress before any prescription.

Are food allergies the same as food intolerances?

Food allergies involve the immune system, often through IgE (immunoglobulin E) reactions, and can cause hives, swelling, or anaphylaxis. Food intolerances are non-allergic reactions, often through enzyme deficiencies (like lactose intolerance) or fermentation patterns. Bloating is much more often an intolerance than a true allergy.

Should I cut out dairy if I am bloated?

A short trial of dairy reduction can help if lactose intolerance or a dairy fermentation pattern is contributing. Many adults are mildly lactose intolerant. We use it as a 2 to 4 week experiment rather than a forever rule, then reintroduce in a structured way.

What is the migrating motor complex (MMC)?

The migrating motor complex is the "cleaning wave" of muscle contractions that sweeps food residue and bacteria from the small intestine into the colon between meals. It runs about every 90 minutes when you are not eating. Constant snacking, narcotic pain medications, and slow thyroid function all blunt it, which sets up SIBO.

How do PPIs cause bloating?

PPIs (proton pump inhibitors like omeprazole, esomeprazole, and pantoprazole) lower stomach acid, which is one of the body's main defenses against bacteria entering the small intestine. Chronic PPI use is a documented risk factor for SIBO. We work with your prescriber to taper when it is medically safe.

What is the role of bile acids in digestion?

Bile acids are made by the liver, stored in the gallbladder, and released to break down fats. They also help control bacterial growth in the small intestine. Sluggish gallbladder function, post-cholecystectomy changes, or fatty liver can disrupt bile flow and contribute to bloating and bacterial overgrowth.

Can fatty liver cause digestive symptoms?

Yes, fatty liver (now called metabolic dysfunction-associated steatotic liver disease, or MASLD) can disrupt bile production and worsen digestive symptoms. It is also a marker of insulin resistance, which raises systemic inflammation. We screen with liver enzymes, GGT, and sometimes a FibroScan.

What is the difference between hydrogen and methane SIBO?

Hydrogen-dominant SIBO usually presents with diarrhea or normal stool patterns. Methane-dominant SIBO (now called intestinal methanogen overgrowth, or IMO) is associated with constipation. The treatment differs slightly, often requiring a combination antimicrobial approach for methane.

How does the gut microbiome affect mood?

The gut microbiome (the trillions of bacteria in your intestines) helps produce serotonin, GABA, and short-chain fatty acids that regulate inflammation. Disruptions can drive anxiety, depression, and brain fog through the gut-brain axis. Many patients report mood improvement when their gut symptoms resolve.

Can pelvic floor dysfunction cause bloating?

Yes, pelvic floor dysfunction can cause bloating through impaired bowel emptying, especially in patients with constipation. A skilled pelvic floor physical therapist can be transformative. We refer to vetted Philly-area pelvic floor specialists when this is part of the picture.

What is leaky gut, and is it real?

"Leaky gut" is a popular term for increased intestinal permeability, which is a real phenomenon studied in conditions like celiac disease, inflammatory bowel disease, and certain infections. The popular use of the term often outpaces the evidence. We focus on actual, measurable factors like inflammation, food triggers, and microbiome health rather than chasing the label.

How does insulin resistance affect gut health?

Insulin resistance (when your cells stop responding well to insulin) drives chronic low-grade inflammation, which affects the gut microbiome and motility. Patients with metabolic dysfunction often have more bloating, dysbiosis, and food sensitivities. Treating metabolic health usually improves gut symptoms in parallel.

What is the role of stomach acid in preventing SIBO?

Stomach acid is one of the body's main defenses against bacterial overgrowth. It kills bacteria coming in through food and drink. Low stomach acid, whether from PPIs, H. pylori infection, or aging, raises the risk of SIBO. We assess and support stomach acid carefully when needed.

Can endometriosis cause bloating?

Yes, endometriosis (where tissue similar to the uterine lining grows outside the uterus) can cause significant bloating, particularly around the menstrual cycle. The combination of inflammation, adhesions, and altered gut motility is sometimes called "endo belly." We coordinate with gynecology and pelvic floor PT when this is suspected.

What is the role of the vagus nerve in gut health?

The vagus nerve is the main parasympathetic nerve and connects the brain to the gut. It controls motility, digestive enzyme release, and inflammation. Vagal tone, which we can estimate with HRV (heart rate variability) on a wearable, often correlates with gut health. Breath work and cold exposure can support vagal tone.

Can long COVID cause new bloating and food sensitivities?

Yes, long COVID can cause new gut symptoms through autonomic dysfunction (problems with the automatic nervous system), motility changes, and dysbiosis. Many patients develop new SIBO or post-viral IBS after COVID infection. We test, treat, and pace recovery rather than push through.

How do gallbladder issues affect bloating?

Gallbladder dysfunction or removal (cholecystectomy) can disrupt bile flow, which affects fat digestion and bacterial control. Patients post-gallbladder removal sometimes develop bile acid diarrhea or new bloating. We use targeted bile salts, dietary timing, and sometimes prescription bile acid binders.

Is it normal to be bloated during menstruation?

Mild bloating around menstruation is common because of fluid shifts and prostaglandins. Severe or persistent bloating is not normal and may point to endometriosis, hormonal imbalance, or untreated SIBO. We track patterns over 2 to 3 cycles to find the driver.

TL;DR · 30-second take

If you wake up flat and look six months pregnant by 3 PM, the issue is rarely 'just IBS.' It is usually small intestinal bacterial overgrowth (SIBO), low stomach acid, or a motility problem. We test before we prescribe, then fix the flow of the gut so bacteria stop fermenting your lunch in the wrong place.

Bloating and Digestive Discomfort in Philadelphia

TL;DR: If you wake up with a flat stomach but look pregnant by 3 PM, you do not just have "IBS." You likely have a motility problem or SIBO (small intestinal bacterial overgrowth). At Fishtown Medicine, I stop telling you to "eat more fiber" and start testing why your gut has slowed down.

You ate a salad from Sweetgreen in Rittenhouse, and twenty minutes later you have to unbutton your pants. You feel heavy, foggy, and uncomfortable. You see a GI doctor. They run an endoscopy and tell you, "Everything looks normal." That is frustrating, and it is also good news. It means you do not have cancer, ulcers, or inflammatory bowel disease. It does not solve your symptoms. When structural disease is ruled out, what usually remains is a functional disorder, a problem with how the gut moves and processes food. Most patients get labeled "IBS." At Fishtown Medicine, I dig for the root cause.

"IBS is a symptom, not a diagnosis. It tells me what is happening, not why."

Why Does My Stomach Look Pregnant After Lunch?

That distension you feel is gas. Methane and hydrogen produced by bacteria fermenting your food. In Philadelphia, our food culture of craft beer, sourdough pretzels, and pizza is fertile ground for fermentation. The food is not the enemy. The location of the bacteria is.

"Bloating is almost always misplaced fermentation. Bacteria belong in the large intestine. When they migrate up into the small intestine (SIBO), every carbohydrate makes you feel like a walking brewery."

How Does Fishtown Medicine Approach Bloating?

The Fishtown Medicine approach to bloating treats the gut like the Schuylkill River. If the flow is strong, the water stays clear. If it stagnates, algae blooms. The goal is to restore the flow.

Measure: Breath Testing and Stool Analysis

We use functional diagnostics that look at metabolism, not just anatomy.

SIBO breath testing. Measures hydrogen and methane after a sugar drink to see whether bacteria are living in the small intestine.
GI-MAP stool test. A DNA-based stool analysis that screens for parasites, H. pylori (a stomach bacterium that can lower acid), and pancreatic enzyme function.

Nourish: A Temporary Low-Fermentation Plan

We do not keep patients on a restrictive low-FODMAP diet forever. That starves your beneficial microbiome. We use it as a short-term tool while we treat overgrowth, then move to meal spacing so your migrating motor complex (the cleaning wave between meals) has time to sweep the small intestine clean.

Restore: Vagus Nerve Support

Your gut and brain are connected by the vagus nerve (the main parasympathetic pathway). When you are chronically stressed, the brain tells the gut to slow down. We use:

Get Real Answers

Tired of being told your labs are 'normal'? Dr. Ash digs deeper.

Start Your Investigation

Prokinetics. Natural agents like ginger and artichoke, plus prescriptions like low-dose erythromycin or prucalopride when needed, to restart the cleaning wave.
Nervous system regulation. Breath work, vagal exercises, and sleep optimization to shift the gut from fight or flight to rest and digest.

Why Does SIBO Keep Coming Back?

Many patients have already taken rifaximin (a gut-targeted antibiotic), felt better for 2 weeks, and then relapsed. That happens when the bacteria get cleared but the underlying flow problem is not addressed. If you do not fix why the river stopped moving (low thyroid, low stomach acid, chronic stress, or pelvic floor issues), the bacteria simply repopulate. At Fishtown Medicine, I treat motility, not just microbes.

When Should I See a GI Specialist?

You should see a GI specialist for an endoscopy or colonoscopy when red flag signs appear, and we can coordinate that referral.

Blood in stool, black or bright red.
Unexplained weight loss without dietary change.
Nighttime symptoms that wake you from sleep.
Family history of colon cancer or inflammatory bowel disease (Crohn's or ulcerative colitis).

For chronic bloating, gas, and "food fear," that is our specialty.

Guidance from the Clinic

"Most of the bloating I see is not a food intolerance. It is a flow problem. Once we restart the cleaning wave between meals, foods that used to wreck patients become tolerable again."

I have had patients come in afraid of every vegetable, convinced gluten was the enemy. After treating SIBO and restoring motility, they were back to enjoying pizza on a Friday night. Not as a daily habit, but as a normal life.

Actionable Steps in Philly

A custom plan for bloating.

Space your meals. Aim for 4 to 5 hours between meals so the migrating motor complex can do its job. Constant snacking blocks it.
Chew thoroughly and slow down. Digestion starts in the mouth. Eating in 5 minutes at your desk is one of the most overlooked drivers of bloating.
Check your stomach acid. Long-term PPI (proton pump inhibitor) use is a major risk factor for SIBO. We work with your prescriber to taper when it is safe.
Treat your thyroid. Hypothyroidism slows everything in the gut. A full thyroid panel is part of every bloating workup.
Get tested. SIBO breath testing and GI-MAP stool analysis turn guesses into a plan.

Book Your Diagnostic

Scientific References

Pimentel M, et al. "ACG Clinical Guideline: Small Intestinal Bacterial Overgrowth." Am J Gastroenterol. 2020.
Lacy BE, et al. "Bowel disorders." Gastroenterology. 2016.
Quigley EMM. "The gut-brain axis and the microbiome: Clues to pathophysiology and opportunities for novel management strategies in irritable bowel syndrome (IBS)." J Clin Med. 2018.
Lo WK, Chan WW. "Proton pump inhibitor use and the risk of small intestinal bacterial overgrowth: A meta-analysis." Clin Gastroenterol Hepatol. 2013.
Rezaie A, et al. "Hydrogen and methane-based breath testing in gastrointestinal disorders: The North American Consensus." Am J Gastroenterol. 2017.

Medical Disclaimer: This resource provides clinical context for educational purposes. In the world of Precision Medicine, there is no "one size fits all". The right protocol must be matched to your unique lab work, physiology, and goals. Consult Dr. Ash to determine if this approach is right for you, especially if you have chronic health conditions or are taking prescription medications.

Fishtown Medicine | Symptoms

2418 E York St, Philadelphia, PA 19125(267) 360-7927 hello@fishtownmedicine.comHSA/FSA Eligible

Book Your Diagnostic

Frequently Asked Questions

Common Questions

Deep-Dive Questions

Still have a question?

He answers personally. Usually within a few hours.