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Naturopathic articles crafted for you

​Each piece is a little treasure of wisdom,
​offering insight, natural solutions and holistic approaches to health.

What Affects Gut Motility? Understanding the Causes of Digestive Symptoms

16/7/2026

 
Gut motility doesn't operate in isolation. It is influenced by many factors, including your nervous system, diet, hydration, hormones, inflammation and the health of your gut microbiome.

​When one or more of these factors becomes disrupted, digestive symptoms may follow.

Part 2 of the 3 part Gut Motility Series
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Stress and the Nervous System

Stress has a powerful influence on digestion.  When your brain perceives stress, it activates the sympathetic nervous system, often called the "fight or flight" response. This shifts your body's priorities away from digestion and towards dealing with the perceived threat.

As a result, stomach emptying may slow, while the large intestine may become more active, contributing to symptoms such as nausea, reflux, abdominal discomfort or diarrhoea.
​

Long-term stress can also worsen existing digestive conditions by disrupting the normal communication between the brain and the gut.
Explore the complete Gut Motility series

​Part 1: What Is Gut Motility? Understanding the Key to Healthy Digestion – Learn how gut motility works and why it's essential for healthy digestion.

Part 3:
  
How to Support Healthy Gut Motility Naturally - 
Explore what current research says about the naturopathic approach to supporting healthy digestive function

Eating Habits and Hydration

Your digestive system works best when it has regular routines. Irregular meal patterns, skipping meals or eating very large meals can all influence the normal rhythm of digestion.
​

Adequate hydration is equally important. Water helps keep stool soft and supports the smooth movement of waste through the intestines. Even mild dehydration may contribute to slower bowel movements and constipation.

Inflammation

Inflammation anywhere within the digestive tract can interfere with normal muscle contractions.
​

In some cases, changes in gut motility may continue even after the original inflammation has settled. This may help explain why some people continue to experience altered bowel habits following gastrointestinal illness or inflammatory bowel conditions.

The Gut Microbiome

The trillions of bacteria that live within the digestive tract do much more than help digest food. They also communicate with the nervous system and produce substances that influence gut motility.
​

Research suggests that changes in the composition of the gut microbiome may contribute to either slower or faster intestinal transit, highlighting the close relationship between gut bacteria and digestive function.

Hormonal Changes

Hormones naturally influence the speed at which food moves through the digestive tract.
​

For example, changes in female sex hormones during the menstrual cycle, pregnancy and menopause can affect bowel habits. Progesterone tends to slow digestion, while changes in oestrogen levels may alter intestinal function. These hormonal shifts help explain why digestive symptoms often fluctuate throughout different stages of life.

Common Gut Motility Disorders

When the normal movement of the digestive tract becomes disrupted, a range of conditions can develop. Some involve slowed movement, while others affect the coordination of the digestive muscles or nerves.
​

Understanding these conditions can help explain why symptoms occur, although diagnosis should always be made by an appropriately qualified healthcare practitioner.
Slow Gut Motility and Constipation
One of the most common motility problems is slow transit constipation, where waste moves too slowly through the large intestine.
People with slow gut motility may experience:
  • infrequent bowel movements
  • hard or difficult-to-pass stools
  • bloating
  • abdominal discomfort
  • a feeling of incomplete emptying.
Over time, persistent constipation can affect quality of life and may contribute to reduced appetite, fatigue and ongoing digestive discomfort.

Irritable Bowel Syndrome (IBS)
Irritable bowel syndrome (IBS) is one of the most common functional digestive disorders worldwide.  Rather than being caused by structural damage to the digestive tract, IBS is now understood to involve altered communication between the gut and the brain. This can affect gut motility, pain sensitivity and bowel habits.
Symptoms commonly include:
  • abdominal pain or cramping
  • bloating
  • excess gas
  • constipation
  • diarrhoea
  • alternating constipation and diarrhoea.
Because IBS can present differently from person to person, management often requires an individualised approach that considers diet, stress, lifestyle and overall digestive health.

Gastroparesis
Gastroparesis is a condition in which the stomach empties more slowly than normal.  Instead of moving food efficiently into the small intestine, the stomach retains food for longer than it should. This may lead to:
  • early fullness after eating
  • nausea
  • vomiting
  • bloating
  • upper abdominal discomfort
  • reflux.
In some people, gastroparesis develops following nerve damage, particularly in people living with diabetes, although the underlying cause is not always known.

Problems with Bowel Coordination
Not all gut motility problems involve movement that is too slow or too fast. In some cases, the muscles and nerves responsible for bowel emptying simply do not coordinate effectively.

This can contribute to difficulty passing stool or, in some people, reduced control over bowel movements (faecal incontinence). Causes may include nerve injury, weakened pelvic floor muscles, childbirth, surgery or neurological conditions.
​

Although these conditions are common, many people feel embarrassed to seek help. Appropriate assessment can often identify contributing factors and guide effective management.

Common Questions about Gut Motility

Q. Could stress be affecting my digestion?

A. Yes. Stress can influence the gut-brain axis and alter gut motility. Depending on the individual, this may contribute to symptoms such as constipation, diarrhoea, bloating or abdominal discomfort. Ongoing stress can also worsen existing digestive conditions.

Q. Can dehydration cause constipation?

A. Yes. Inadequate fluid intake can contribute to harder stools and slower bowel movements. However, constipation often has multiple contributing factors, including diet, medications, physical activity, hormones and underlying health conditions.

Q. Are gut motility disorders common?

A. Disorders affecting gut motility are relatively common. Some, such as constipation and irritable bowel syndrome (IBS), affect millions of people worldwide, while others, including gastroparesis, are much less common.

Q. When should I seek medical advice for digestive symptoms?

A. Persistent or worsening digestive symptoms should be assessed by a healthcare professional. Seek prompt medical advice if you experience unexplained weight loss, blood in the stool, persistent vomiting, severe abdominal pain, difficulty swallowing, or ongoing changes in bowel habits.

Looking Beyond the Symptoms

While these conditions have different names and presentations, they all highlight an important principle: gut motility is influenced by the health of the whole digestive system and the body as a whole.

From a naturopathic perspective, digestive symptoms are rarely viewed in isolation. Stress, nutrition, hydration, inflammation, hormonal balance, nervous system function and the gut microbiome all interact to influence how efficiently the digestive tract functions.
​

Supporting gut motility therefore involves more than simply relieving symptoms. It begins with understanding the factors that may be contributing to the imbalance and creating the conditions that allow the digestive system to function as effectively as possible.
free 10 minute chat
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​​​​Vanessa Winter
​Naturopath & Medical Herbalist

BHSc (Deans Award for Academic Excellence), BED, Adv.Dip.Nat., Adv.Dip.Herb.Med., NMHNZ
​Registered with Naturopaths and Medical Herbalists of NZ (NMHNZ)
References

Spencer NJ, Hu H. Enteric nervous system: sensory transduction, neural circuits and gastrointestinal motility.
Nature Reviews Gastroenterology & Hepatology. 2020;17(6):338–351.

Rao SSC, Camilleri M, Hasler WL, et al. Evaluation and management of gastrointestinal motility disorders.
American Journal of Gastroenterology. 2020.

Furness JB. The Enteric Nervous System and Neurogastroenterology. Nature Reviews Gastroenterology & Hepatology.

Barbara G, Feinle-Bisset C, Ghoshal UC, et al. The intestinal microenvironment and functional gastrointestinal disorders. Gastroenterology.

Carabotti M, Scirocco A, Maselli MA, Severi C. The gut-brain axis: interactions between enteric microbiota, central and enteric nervous systems. Annals of Gastroenterology. 2015.

Camilleri M, Bharucha AE, Farrugia G. Neurogastroenterology in clinical practice. American Journal of Gastroenterology.

National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). Digestive Diseases and Gastrointestinal Motility Disorders.

Cleveland Clinic. Gastroparesis.

Cleveland Clinic. Irritable Bowel Syndrome (IBS).

Harvard Health Publishing. The Gut-Brain Connection.

Hu S, Wang Y, Lichtenstein L, et al. Role of the gut microbiota in gastrointestinal motility. Neurogastroenterology & Motility.

Ghoshal UC, Singh R. Magnesium and gastrointestinal function. Nutrients.

Marx W, McCarthy AL, Ried K, et al. The effect of ginger on gastric emptying and gastrointestinal motility: a systematic review.
Food Science & Nutrition.

Mennella I, Fogliano V, Ferracane R. Bitter taste receptors and their emerging role in human digestion. Nutrients.

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