Looking Beyond “Just Stress”
Do you regularly struggle with bloating, stomach pain, constipation, diarrhoea, or digestion that just feels unpredictable?
If so, you may have been diagnosed with Irritable Bowel Syndrome, more commonly known as IBS.
For many people, IBS can feel incredibly frustrating. One day your digestion seems fine, the next, you look six months pregnant after dinner or are suddenly running to the bathroom. It can affect confidence, social life, travel, energy levels — and make eating out feel stressful rather than enjoyable.
A lot of people are told that IBS is “just stress” or that they simply need to avoid a few foods and learn to live with it. While stress can absolutely affect digestion, IBS is often far more complex than that.
In many cases, there are underlying issues contributing to symptoms, such as gut bacteria imbalances, food sensitivities, poor digestion, or problems with gut motility.
As a registered Nutritional Therapist, I take a more personalised and root-cause-focused approach to digestive health, helping clients understand why symptoms may be happening in the first place.
What Exactly Is IBS?
Irritable Bowel Syndrome is considered a functional digestive disorder. In simple terms, this means the digestive system is not functioning properly, even if standard medical tests come back “normal.”
Symptoms can vary from person to person, but commonly include:
- Bloating
- Abdominal pain or cramping
- Constipation
- Diarrhoea
- Alternating constipation and diarrhoea
- Excessive gas
- Reflux or burping
- Feeling overly full after meals
- Food sensitivities
- Fatigue and brain fog alongside digestive symptoms
Some people only experience occasional flare-ups, while others feel uncomfortable most days.
IBS Often Has More Than One Trigger
One of the reasons IBS can feel so confusing is that there is rarely one single cause.
For some people, stress plays a major role. For others, symptoms started after food poisoning, antibiotics, travel, hormonal changes, or years of digestive issues gradually building up.
Very often, several factors are involved at the same time.
Gut Bacteria Imbalances and SIBO
One common issue I often see alongside IBS is Small Intestinal Bacterial Overgrowth, often shortened to SIBO.
This happens when bacteria begin overgrowing in the small intestine, where they are not meant to be in large amounts.
Typical signs can include:
- Bloating shortly after eating
- Excessive gas
- Reacting badly to foods like onions, garlic, beans, or lentils
- Constipation or diarrhoea
- Feeling uncomfortable after otherwise “healthy” meals
Many people with SIBO gradually start avoiding more and more foods because eating simply becomes unpleasant.
Food Sensitivities and IBS
Certain foods can absolutely trigger IBS symptoms, but identifying them is not always straightforward.
Common triggers may include:
- Gluten
- Dairy
- Highly processed foods
- Artificial sweeteners
- Alcohol
- Large amounts of sugar
- Certain high-FODMAP foods
That said, food reactions are often a sign that the gut is struggling rather than the food itself being the true root cause.
For example, some people temporarily tolerate fewer foods when the gut microbiome is imbalanced or digestion is impaired.
This is one reason why restrictive diets do not always solve the problem long term.
The Gut-Brain Connection
Stress and digestion are very closely linked.
You may have noticed your symptoms flare up during stressful periods, busy weeks, travel, poor sleep, or emotional overwhelm.
This happens because the gut and brain are constantly communicating through what is known as the gut-brain axis.
Stress can affect:
- Gut motility
- Stomach acid production
- Digestive enzymes
- Inflammation
- Gut bacteria balance
- Nervous system regulation
But this does not mean IBS is “all in your head.”
Stress may worsen symptoms, but there are often physical imbalances involved too.
Sometimes the Problem Is Digestion Itself
Healthy digestion relies on far more than simply eating “healthy foods.”
Low stomach acid, poor enzyme production, sluggish bile flow, or impaired gut motility may all contribute to symptoms like:
- Bloating
- Reflux
- Burping
- Constipation
- Feeling heavy or overly full after meals
If food is not being properly broken down and moved through the digestive system, fermentation and discomfort can increase.
Why Generic IBS Advice Often Doesn’t Work
Many IBS sufferers are told to:
- Eat more fibre
- Take probiotics
- Avoid spicy food
- Reduce stress
- Follow a low-FODMAP diet forever
While these strategies may help some people, IBS is highly individual.
For example:
- More fibre may help one person but worsen bloating in another
- Some probiotics can improve symptoms, while others make bloating worse
- Healthy foods like broccoli or beans may trigger symptoms in people with bacterial overgrowth
- Cutting out more and more foods may reduce symptoms short term without actually improving gut health
This is why a personalised approach can make such a difference.
A Functional Medicine Approach to IBS
Rather than simply trying to suppress symptoms, a functional medicine approach looks at what may be contributing to them.
Depending on the person, this may involve exploring:
- Diet and food triggers
- Gut microbiome balance
- SIBO
- Stress and nervous system regulation
- Digestive function
- Sleep and lifestyle factors
- Nutrient deficiencies
- Inflammation and immune health
Testing can sometimes be useful, particularly in more complex or long-standing cases.
Can IBS Improve?
In many cases, yes.
Once the underlying drivers are identified and addressed, many people notice significant improvements in:
- Bloating
- Bowel regularity
- Food tolerance
- Energy levels
- Abdominal discomfort
- Confidence around eating and social situations
Digestive symptoms are often the body’s way of signalling that something is out of balance — not necessarily something you simply have to “put up with” forever.
Frequently Asked Questions About IBS
Can IBS go away naturally?
Some people notice major improvements through diet and lifestyle changes alone, while others need a more targeted approach depending on the underlying drivers involved.
What foods commonly trigger IBS?
Common triggers include highly processed foods, alcohol, dairy, gluten, artificial sweeteners, and certain fermentable carbohydrates. However, triggers vary greatly between individuals.
Is IBS caused by stress?
Stress can absolutely worsen IBS symptoms through the gut-brain connection, but IBS often involves physical gut imbalances as well.
Can probiotics make IBS worse?
Yes. Certain probiotics, or fermented foods, may worsen bloating or discomfort, particularly in people with SIBO or histamine sensitivities.
Why do healthy foods make me feel worse?
One of the most confusing things about IBS that many people notice is that they react badly to foods that are supposed to be healthy. Foods like broccoli, beans, lentils, salads, onions, garlic, and other high-fibre foods can sometimes trigger bloating, gas, pain, or digestive discomfort. This does not necessarily mean those foods are “bad” or unhealthy. Often, it is a sign that the digestive system is struggling.
In some people, certain carbohydrates are fermented too aggressively by gut bacteria, particularly in cases of Small Intestinal Bacterial Overgrowth (SIBO). In others, poor digestion, stress, inflammation, or gut imbalances may be contributing. This is one reason why generic advice like “just eat more fibre” does not always help people with IBS — and can sometimes make symptoms worse.
What is the difference between IBS and SIBO?
IBS is a symptom-based diagnosis, while SIBO refers to bacterial overgrowth in the small intestine. Many people diagnosed with IBS actually have underlying SIBO.
Why do I look pregnant after eating?
Significant bloating after meals can be linked to fermentation, food intolerances, impaired digestion, or bacterial overgrowth.
Final Thoughts
Living with IBS can feel exhausting and frustrating, especially when you feel as though you have already tried everything.
But digestive symptoms are rarely random, and in many cases there are underlying imbalances contributing to how you feel.
With the right support and a personalised approach, many people are able to significantly improve their digestion, energy, and quality of life.
Need Support With IBS?
I work online with clients across the UK and internationally, helping people uncover the possible root causes behind bloating, digestive symptoms, food sensitivities, and IBS using a personalised functional medicine approach.
If you would like support with IBS, bloating, or digestive symptoms, you can find more information about working with me here.
