Gut Issues

Gut issues - when digestion is affected by stress and tension

Digestive discomfort is one of the most common concerns we hear from families. It can show up as bloating, reflux, constipation, unsettled babies, abdominal pain, or unpredictable bowel patterns. Often, people have tried changing food, routines, or supplements, yet the issue continues.

What’s sometimes missed is how closely digestion is tied to the nervous system, and how stress - physical or emotional - can influence how the gut functions.

We’ve all felt the gut–brain connection

Most people intuitively understand that stress affects digestion. We talk about “butterflies in the stomach” when we’re nervous, or feeling sick to the stomach under pressure. Some people lose their appetite when stressed, while others experience nausea, cramping, or urgency.

These responses aren’t imagined- they’re neurological.

The digestive system is highly sensitive to signals from the nervous system, particularly those related to safety and stress.

Digestion only works when the body feels safe

For digestion to function efficiently, the body needs to be in a calm, regulated state. This is largely governed by the parasympathetic nervous system, often referred to as the rest and digest response.

A key player in this system is the vagus nerve. It helps regulate digestion, gut movement, enzyme release, and communication between the gut and the brain.

When the nervous system shifts into a sympathetic state - fight or flight - digestion is not a priority. Blood flow and energy are redirected away from the gut and towards survival. 

Physical Tension

The vagus nerve exits the brainstem near the junction between the skull (occiput) and the top of the neck (C1). This area can be influenced by physical stresses such as birth strain, head knocks, or ongoing tension patterns.

Jaw tension is another commonly overlooked factor. From a neurological perspective, clenching the jaw is associated with bracing, in preparation to fight. This reinforces a sympathetic, protective state - one that is not conducive to digestion.

Rather than digesting, the body stays alert.

When there is ongoing tension or altered input from these regions, the brain may receive unclear or excessive sensory information - a process known as dysafferentation. This can affect how the nervous system regulates internal organs, including the gut.

Calming the system to support digestion

Rather than focusing only on the gut itself, we often look at how regulated the nervous system is overall. When the system is calmer and communication is clearer, the body is better able to prioritise digestion.

In our practice, we use NeuroThermal scanning as part of the INSiGHT system to assess nervous system patterns. This scan measures temperature differences along the spine, which can reflect changes in nervous system regulation and stress responses.

For people experiencing digestive concerns, these patterns can offer insight into how the nervous system may be influencing gut function. The scan does not diagnose digestive conditions - it helps us understand how the nervous system is responding and adapting.

A supportive, neurological approach

Chiropractic care focuses on supporting nervous system communication by addressing areas of stress and tension that may interfere with regulation. Care is gentle, individualised, and centred around helping the body move out of a constant stress response.

Chiropractic does not treat gut conditions or digestive disorders. What it supports is the nervous system’s ability to regulate, adapt, and prioritise internal function - including digestion - when the body feels safe.

Supporting digestion from the inside out

When the nervous system is calmer and less focused on survival, digestion often has the opportunity to function more efficiently. People may notice changes in comfort, regularity, or how their body responds to everyday stressors.

At Hands on Health Chiropractic, our role is to support nervous system function and help families understand how stress and tension can affect gut health over time.

References:

Angus, K., Asgharifar, S., & Gleberzon, B. (2015). What effect does chiropractic treatment have on gastrointestinal (GI) disorders: a narrative review of the literature. Journal of the Canadian Chiropractic Association, 59(2), 122–133. https://pubmed.ncbi.nlm.nih.gov/26136604/