Why Does My Stomach Feel So Bloated?
You finish a meal and within minutes your abdomen feels tight, swollen, and uncomfortable. Your trousers no longer fit properly, and you feel sluggish. Bloating and a sense of fullness are among the most common digestive complaints I see at our practice in Zürich Seefeld – and they are far more than just a cosmetic nuisance.
In my experience as a general practitioner with a focus on functional medicine, bloating is almost always a signal. Your gut is trying to tell you something. The question is: what exactly?
Common Causes of Bloating
The list of potential triggers is long, which is precisely why a thorough evaluation matters. Some of the most frequent causes include:
Food intolerances: Lactose, fructose, sorbitol, or histamine – even small amounts of a trigger food can cause significant gas production and abdominal distension. Many patients are unaware they have an intolerance because the symptoms can appear hours after eating.
Small Intestinal Bacterial Overgrowth (SIBO): When bacteria that normally reside in the large intestine migrate into the small intestine, they ferment food prematurely. The result is excessive gas, bloating, and often alternating diarrhoea and constipation. SIBO is far more common than most people realise.
Dysbiosis: An imbalanced gut microbiome – too many pathogenic bacteria, too few beneficial ones – disrupts digestion and creates a pro-inflammatory environment. This can stem from antibiotic use, stress, poor diet, or chronic illness.
Insufficient digestive enzymes: Your pancreas and small intestine produce enzymes to break down fats, proteins, and carbohydrates. When enzyme production is reduced – due to age, chronic stress, or pancreatic insufficiency – food ferments instead of being properly digested.
Stress and the gut-brain axis: Chronic stress slows gastric motility, reduces enzyme secretion, and alters the microbiome. Many patients notice that their bloating worsens during stressful periods, even when their diet hasn’t changed.
When Should You See a Doctor?
Occasional bloating after a large meal is normal. However, you should seek medical evaluation if bloating is persistent (occurring most days), if it is accompanied by unintentional weight loss, blood in the stool, severe pain, or if it has changed significantly in character or intensity. These symptoms can indicate conditions that require prompt investigation, including coeliac disease, ovarian pathology, or gastrointestinal obstruction.
How We Investigate Bloating
At our practice, I take a detailed history – not just what you eat, but how you eat, your stress levels, medication use, and bowel habits. From there, I tailor the diagnostic workup:
Blood tests can reveal markers of inflammation, coeliac antibodies, thyroid dysfunction, and pancreatic function. Hydrogen breath tests help identify lactose or fructose malabsorption as well as SIBO. Stool analysis can provide insights into your microbiome composition, digestive capacity, and inflammatory markers like calprotectin. In some cases, an abdominal ultrasound or referral for endoscopy may be warranted.
What We Do: Our Approach to Treatment
Identify and remove triggers: Whether it is a specific food, a medication side effect, or SIBO, the first step is always to find and address the root cause rather than simply suppressing symptoms.
Restore digestive function: This may involve digestive enzyme supplementation, bile acid support, or targeted probiotics to rebalance the microbiome. I often use specific probiotic strains based on stool analysis results.
Optimise diet: Not with rigid elimination diets, but with a structured approach – sometimes a temporary low-FODMAP phase, followed by systematic reintroduction to identify your personal triggers.
Address stress: Because the gut-brain connection is so powerful, stress management is not optional – it is a core part of treatment. Vagus nerve activation techniques, breathing exercises, and lifestyle modifications all play a role.
Support motility: Prokinetic agents or natural motility enhancers can help if slow transit is contributing to your symptoms.
Conclusion
Bloating is not something you simply have to live with. In most cases, a systematic, root-cause approach can significantly reduce or eliminate symptoms. If you have been struggling with persistent bloating and fullness, I invite you to book an appointment at our practice in Zürich Seefeld. Together, we will find out what your gut is trying to tell you – and how to help it.
