Gut &
Digestive Health

Step 1 — Listen to the Pattern

We begin with a detailed history.

We want to understand:

When your symptoms began
Which foods affect you
Whether symptoms occur immediately or several hours after meals
Your bowel habits
Previous infections
Antibiotic history
Medication use
Stress patterns
Sleep quality
Previous surgeries
Existing diagnoses
Previous laboratory testing
Supplements or treatments you have already tried

The timing and pattern of symptoms can provide important clues about which areas deserve further investigation.

The Gut-Brain Connection

The digestive system and nervous system communicate constantly.

Neurological signaling helps regulate:

Gastrointestinal motility
Stomach and intestinal contractions
Digestive secretions
Pancreatic enzyme release
Bile and gallbladder activity
Blood flow to the digestive tract

This helps explain why stress, poor sleep, neurological dysfunction, and chronic sympathetic activation can sometimes significantly change digestion.

It also explains why some patients notice their gastrointestinal symptoms worsen during periods of emotional or physical stress.

We therefore consider the nervous system as part of digestive health rather than viewing the gastrointestinal tract as an isolated organ system.

Gut & Digestive Health

Written by Dr. Arik Naylous DAcCHM, L.Ac

A Healthier Body Starts With Better Digestive Function

Digestive health involves much more than whether you have bloating, constipation, or stomach pain. Your gastrointestinal system is responsible for breaking down food, absorbing nutrients, coordinating immune responses, supporting the intestinal microbiome, and communicating continuously with the nervous system.

When one part of this system begins functioning poorly, problems can develop throughout the digestive process. For example, symptoms may begin with impaired stomach acid production, poor digestive enzyme activity, altered bile flow, disrupted motility, microbial imbalance, or irritation of the intestinal barrier. Over time, several of these issues can begin interacting with one another.

Rather than focusing only on suppressing individual symptoms, our functional medicine approach looks at how the digestive system is functioning as a whole and what may be interfering with normal physiology.

Common Signs Your Digestive System May Need Support

Digestive dysfunction does not always present as obvious stomach pain. Some people experience primarily gastrointestinal symptoms, while others notice changes in their energy, concentration, skin, or tolerance to foods.

Common concerns may include:

Bloating or abdominal distention after meals
Excessive gas
Frequent burping or belching
Acid reflux or heartburn
Feeling overly full after eating
Constipation
Diarrhea or loose stools
Alternating constipation and diarrhea
Abdominal cramping or discomfort
Nausea after meals
Poor tolerance of fatty foods
Undigested food in the stool
Greasy, floating, or poorly formed stools
Food sensitivities that seem to increase over time
Bad breath or an unpleasant taste in the mouth
Brain fog after eating
Fatigue or sleepiness after meals
Difficulty maintaining healthy nutrient levels
Changes in bowel habits during periods of stress

These symptoms can provide important clues, but they do not automatically identify the cause. Two people with the same symptom, such as bloating, may have completely different underlying digestive problems.

Why We Look Beyond the Symptom

A symptom tells us where something may be going wrong, but it does not always tell us why.

For example, chronic bloating could potentially be associated with changes in intestinal bacteria, impaired digestion, poor gastrointestinal motility, difficulty breaking down certain carbohydrates, food reactions, or altered digestive secretions.

Reflux may also be more complicated than simply having “too much acid.” Digestive function depends on coordinated stomach acid production, enzymes, bile, motility, nervous-system signaling, and the timing of movement through the gastrointestinal tract.

This is why functional medicine asks a different question:

What is preventing the digestive system from functioning normally?

Instead of looking at each symptom in isolation, we investigate patterns across digestion, nutrition, metabolism, immune function, lifestyle, and the nervous system.

The Digestive System Works as a Chain

Healthy digestion requires several steps to occur in the correct sequence.

Food must first be properly broken down through chewing, stomach acid, and digestive secretions. The pancreas must contribute digestive enzymes. The liver and gallbladder help provide bile for fat digestion. The intestines must move food forward at the appropriate rate. Nutrients then need to be absorbed through a healthy intestinal surface.

At the same time, the intestinal immune system must appropriately distinguish between harmless food proteins, normal microorganisms, and potentially harmful organisms.

The microbiome must also maintain adequate diversity and balance.

A disturbance early in this process can sometimes create problems further downstream.

For this reason, we may evaluate several levels of digestive function rather than focusing only on where the patient feels the symptom.

Areas We May Evaluate

1. Stomach Acid and Upper Digestive Function

Adequate stomach acid contributes to normal protein digestion and prepares food for later stages of digestion.

When upper digestive function is impaired, some people experience:

Excessive burping
Bloating shortly after eating
Feeling unusually full after meals
Difficulty digesting protein-rich meals
Reflux-like symptoms
Indigestion
Poor nutrient status

The goal is not to assume that every patient needs more or less stomach acid, but to understand how the upper digestive system is functioning.

2. Pancreatic Digestive Enzymes

The pancreas produces enzymes that help break down proteins, carbohydrates, and fats.

When digestive enzyme activity is inadequate, food may not be broken down efficiently before reaching deeper portions of the intestine.

Possible clues can include:

Persistent fullness after eating
Poorly formed stools
Undigested food in the stool
Excessive gas
Difficulty digesting larger meals
Poor tolerance of certain foods

Proper digestion is important not only for nutrient absorption, but also for how food proteins interact with the intestinal immune system.

3. Gallbladder and Bile Function

Bile plays an important role in digesting and absorbing fats.

Symptoms that may warrant a closer look at bile or gallbladder function can include:

Difficulty tolerating greasy or high-fat foods
Bloating several hours after eating
Nausea after fatty meals
Changes in stool consistency
Abdominal discomfort after richer meals

Because digestive organs work together, gallbladder function should not always be evaluated independently from the stomach, pancreas, liver, and intestinal tract.

4. Gastrointestinal Motility

Healthy digestion requires food to move through the gastrointestinal tract at an appropriate pace.

If motility becomes too slow or poorly coordinated, fermentation and microbial changes may occur. If transit becomes too fast, nutrient absorption and stool formation may be affected.

Changes in motility can contribute to:

Constipation
Diarrhea
Alternating bowel habits
Bloating
Abdominal pressure
Incomplete bowel movements

Motility is also closely connected with neurological and autonomic nervous-system function.

5. Dysbiosis and Microbiome Imbalance

The gastrointestinal tract contains a complex community of microorganisms that interact with digestion, intestinal immunity, and metabolism.

Dysbiosis refers to an unhealthy alteration in the balance or diversity of these microorganisms.

Possible contributors can include:

Antibiotic exposure
Repeated gastrointestinal infections
Dietary patterns
Chronic stress
Impaired digestion
Changes in intestinal motility
Certain medications
Low dietary diversity

Symptoms may include bloating, excessive gas, changes in stool, food intolerance, or digestive discomfort.

The goal is not simply to “kill bad bacteria.” We look at the environment of the gastrointestinal tract and ask why an unhealthy microbial pattern may have developed in the first place.

6. Small Intestinal Bacterial Overgrowth

The small intestine normally contains far fewer microorganisms than the colon.

When excessive bacteria or methane-producing organisms accumulate in the small intestine, patients may experience symptoms commonly associated with SIBO or intestinal methanogen overgrowth (IMO).

These may include:

Significant bloating after meals
Abdominal distention
Gas
Constipation
Diarrhea
Food intolerance
Abdominal discomfort

When appropriate, breath testing may be used as part of the evaluation.

Just as importantly, we investigate factors that may have allowed the overgrowth to occur, including altered motility and digestive function.

7. Intestinal Barrier Integrity

The intestinal lining acts as a selective barrier between the gastrointestinal tract and the rest of the body.

It must allow nutrients to be absorbed while helping regulate exposure to microorganisms, food proteins, and other compounds inside the intestine.

When intestinal barrier function becomes disrupted, a variety of factors may need to be considered.

These can include:

Dietary factors
Intestinal inflammation
Certain medications
Antibiotic exposure
Chronic stress
Gastrointestinal infections
Bacterial overgrowth
Hormonal influences
Metabolic dysfunction
Neurological dysfunction

Rather than treating “leaky gut” as a diagnosis by itself, we look for the factors that may be contributing to impaired intestinal integrity.

8. Food Reactions and Immune Tolerance

The immune system must encounter food proteins every day without creating an unnecessary inflammatory response.

Proper digestion, intestinal barrier integrity, microbiome health, secretory IgA, and regulatory immune activity all contribute to normal oral tolerance.

Some patients notice that the number of foods they tolerate becomes smaller and smaller over time.

Rather than continuing to eliminate foods indefinitely, the larger question becomes:

Why is the digestive and immune system becoming increasingly reactive?

Our goal is to understand the environment contributing to those reactions while still recognizing that true allergies and medically necessary dietary restrictions require appropriate medical evaluation.

In the Gut: Work North-to-South

Smell
Saliva production
Chewing
Swallowing
HCL release
Pancreatic enzyme release
Gallbladder release of bile
Duodenum microvilli absorption
Intestinal impermeability
Intestinal valve control (ICV)
Oral tolerance
Microbiome development
Colon reabsorption of water
Excretion of feces

Common Factors That Can Disrupt Digestive Health

Digestive dysfunction rarely has only one possible cause.

Depending on the patient, we may investigate several interacting factors, including:

Digestive Factors

Inadequate stomach acid
Digestive enzyme insufficiency
Poor bile flow
Gallbladder dysfunction
Altered gastrointestinal motility

Microbial Factors

Dysbiosis
SIBO
IMO
H. pylori
Previous intestinal infections
Parasitic infections when clinically appropriate

Intestinal Barrier & Immune Factors

Increased intestinal permeability
Loss of normal immune tolerance
Chronic intestinal inflammation
Increasing food reactivity

At the same time, the intestinal immune system must appropriately distinguish between harmless food proteins, normal microorganisms, and potentially harmful organisms.

The microbiome must also maintain adequate diversity and balance.

A disturbance early in this process can sometimes create problems further downstream.

For this reason, we may evaluate several levels of digestive function rather than focusing only on where the patient feels the symptom.

Lifestyle & Environmental Factors

Chronic stress
Poor sleep
Highly processed diets
Excessive alcohol intake
Certain medications
Antibiotic exposure
Environmental exposures

Metabolic & Systemic Factors

Blood sugar dysregulation
Hormonal changes
Thyroid dysfunction
Nutrient deficiencies
Altered autonomic nervous-system function

The important point is that these factors can influence one another.

For example, poor motility can alter the microbiome. Microbial imbalance can contribute to intestinal inflammation. Intestinal inflammation may affect barrier integrity. Impaired digestion can alter nutrient absorption. Stress can change motility and digestive secretions.

This is why the entire pattern matters.

Digestive Conditions and Concerns We Commonly Evaluate

Our functional medicine approach may be used alongside appropriate conventional medical care for patients experiencing:

Irritable bowel syndrome (IBS)
Chronic constipation
Chronic diarrhea
Alternating bowel habits
Persistent bloating
Excessive gas
Acid reflux and GERD
Indigestion
Dysbiosis
Small intestinal bacterial overgrowth (SIBO)
Intestinal methanogen overgrowth (IMO)
Food sensitivities or intolerances
Suspected impaired intestinal permeability
Post-antibiotic digestive changes
Post-infectious digestive symptoms
H. pylori-related concerns
Digestive enzyme insufficiency
Poor fat digestion
Gallbladder-related digestive dysfunction
Low stomach acid concerns
Chronic abdominal discomfort

Patients with diagnosed gastrointestinal diseases such as inflammatory bowel disease, celiac disease, pancreatic disease, gallbladder disease, gastrointestinal bleeding, or other significant pathology should remain under appropriate medical care.

Our Functional Medicine Approach to Digestive Health

Step 2 — Investigate

Testing is selected according to the individual rather than ordering every test for every patient.

Depending on the case, evaluation may include:

Standard blood testing
Nutrient markers
Comprehensive stool testing
SIBO/IMO breath testing
H. pylori testing
Metabolic markers
Thyroid evaluation
Inflammatory markers
Other testing when clinically appropriate

Testing should help answer a clinical question—not simply generate more data.

Step 3 — Connect the Findings

A functional medicine evaluation is not about identifying as many abnormal laboratory values as possible.

The goal is to understand how the findings fit together.

For example:

Poor digestion → altered nutrient absorption → changes in intestinal ecology → inflammation → increased food reactivity

Chronic stress → altered nervous-system signaling → impaired motility → microbial imbalance → bloating and irregular bowel movements

The exact pattern will be different for every patient.

Step 4 — Build an Individualized Plan

Once we understand the major contributors, recommendations may focus on areas such as:

Improving digestive function
Supporting appropriate stomach acid and enzyme activity when indicated
Improving bile and gallbladder function when appropriate
Supporting gastrointestinal motility
Improving dietary quality
Increasing nutrient density
Supporting a diverse microbiome
Addressing identified microbial imbalances
Supporting intestinal barrier health
Correcting nutritional deficiencies
Improving sleep
Managing chronic stress
Supporting nervous-system regulation

The plan depends on the individual findings rather than following the same protocol for every patient.

Why Gut Health Can Affect More Than Digestion

Because the gastrointestinal system interacts with the immune, neurological, endocrine, and metabolic systems, digestive dysfunction may occur alongside symptoms elsewhere in the body.

Patients with gastrointestinal problems may also report:

Fatigue
Brain fog
Changes in concentration
Skin problems
Food reactions
Poor exercise recovery
Nutrient deficiencies
Changes in mood
Changes in energy after meals

These symptoms do not automatically mean the gut is responsible. However, they are one reason we evaluate the patient as a whole rather than treating each complaint as completely unrelated.

The Goal: Restore Function, Not Just Chase Symptoms

Functional medicine is not about searching for one hidden diagnosis that explains everything.

It is about understanding which physiological systems are no longer working efficiently and why.

With digestive health, that means looking at the entire process:

Digestion → Motility → Absorption → Intestinal Barrier → Immune Tolerance → Microbiome → Gut–Brain Communication

When we understand where the breakdown is occurring, we can create a much more focused and individualized strategy.

Our goal is to help patients better understand their digestive health, identify modifiable contributors, and support healthier gastrointestinal function over time.

Does This Sound Like You?

If you’ve been dealing with ongoing bloating, digestive discomfort, irregular bowel movements, food reactions, reflux, fatigue, or symptoms that never seem to fully resolve, it may be time to look deeper. Instead of continuing to manage each symptom individually, we take a comprehensive approach to understand what may be disrupting your digestive function and why.
Together, we can identify the patterns affecting your gut health and create a personalized plan designed around your individual needs.

Ready to take the next step toward better digestive health?

Gut & Digestive Health

Step 1 — Listen to the Pattern

The Gut-Brain Connection

The digestive system and nervous system communicate constantly.

Neurological signaling helps regulate:

Gastrointestinal motility

Stomach and intestinal contractions

Digestive secretions

Pancreatic enzyme release

Bile and gallbladder activity

Blood flow to the digestive tract

This helps explain why stress, poor sleep, neurological dysfunction, and chronic sympathetic activation can sometimes significantly change digestion.

It also explains why some patients notice their gastrointestinal symptoms worsen during periods of emotional or physical stress.

We therefore consider the nervous system as part of digestive health rather than viewing the gastrointestinal tract as an isolated organ system.

Gut & Digestive Health

Written by Dr. Arik Naylous DAcCHM, L.Ac

Common Signs Your Digestive System May Need Support

Digestive dysfunction does not always present as obvious stomach pain. Some people experience primarily gastrointestinal symptoms, while others notice changes in their energy, concentration, skin, or tolerance to foods.

Common concerns may include:

Bloating or abdominal distention after meals

Excessive gas

Frequent burping or belching

Acid reflux or heartburn

Feeling overly full after eating

Constipation

Diarrhea or loose stools

Alternating constipation and diarrhea

Abdominal cramping or discomfort

Nausea after meals

Poor tolerance of fatty foods

Undigested food in the stool

Greasy, floating, or poorly formed stools

Food sensitivities that seem to increase over time

Bad breath or an unpleasant taste in the mouth

Brain fog after eating

Fatigue or sleepiness after meals

Difficulty maintaining healthy nutrient levels

Changes in bowel habits during periods of stress

These symptoms can provide important clues, but they do not automatically identify the cause. Two people with the same symptom, such as bloating, may have completely different underlying digestive problems.

Why We Look Beyond the Symptom

A symptom tells us where something may be going wrong, but it does not always tell us why.

For example, chronic bloating could potentially be associated with changes in intestinal bacteria, impaired digestion, poor gastrointestinal motility, difficulty breaking down certain carbohydrates, food reactions, or altered digestive secretions.

Reflux may also be more complicated than simply having “too much acid.” Digestive function depends on coordinated stomach acid production, enzymes, bile, motility, nervous-system signaling, and the timing of movement through the gastrointestinal tract.

This is why functional medicine asks a different question:

What is preventing the digestive system from functioning normally?

Instead of looking at each symptom in isolation, we investigate patterns across digestion, nutrition, metabolism, immune function, lifestyle, and the nervous system.

The Digestive System Works as a Chain

Healthy digestion requires several steps to occur in the correct sequence.

At the same time, the intestinal immune system must appropriately distinguish between harmless food proteins, normal microorganisms, and potentially harmful organisms.

The microbiome must also maintain adequate diversity and balance.

A disturbance early in this process can sometimes create problems further downstream.

For this reason, we may evaluate several levels of digestive function rather than focusing only on where the patient feels the symptom.

Areas We May Evaluate

​

1. Stomach Acid and Upper Digestive Function

Adequate stomach acid contributes to normal protein digestion and prepares food for later stages of digestion.

When upper digestive function is impaired, some people experience:

Excessive burping

Bloating shortly after eating

Feeling unusually full after meals

Difficulty digesting protein-rich meals

Reflux-like symptoms

Indigestion

Poor nutrient status

The goal is not to assume that every patient needs more or less stomach acid, but to understand how the upper digestive system is functioning.

2. Pancreatic Digestive Enzymes

The pancreas produces enzymes that help break down proteins, carbohydrates, and fats.

When digestive enzyme activity is inadequate, food may not be broken down efficiently before reaching deeper portions of the intestine.

Possible clues can include:

Persistent fullness after eating

Poorly formed stools

Undigested food in the stool

Excessive gas

Difficulty digesting larger meals

Poor tolerance of certain foods

Proper digestion is important not only for nutrient absorption, but also for how food proteins interact with the intestinal immune system.

3. Gallbladder and Bile Function

Bile plays an important role in digesting and absorbing fats.

Symptoms that may warrant a closer look at bile or gallbladder function can include:

Difficulty tolerating greasy or high-fat foods

Gut &
Digestive Health

Smell
Saliva production
Chewing
Swallowing
HCL release
Pancreatic enzyme release
Gallbladder release of bile
Duodenum microvilli absorption
Intestinal impermeability
Intestinal valve control (ICV)
Oral tolerance
Microbiome development
Colon reabsorption of water
Excretion of feces