Functional Disorders

IBS is still too often dismissed as a diagnosis of exclusion treated with a pamphlet, an antispasmodic, and a low-FODMAP handout. In reality it is a biologically driven condition sitting at the intersection of the microbiome, diet, the gut-brain axis, visceral hypersensitivity, and psychology. This is the full map — from excluding serious disease through symptom relief, dietary and microbiome work, to faecal transplant and the cellular frontier of confocal endomicroscopy.

The burning, the bloating, the uncomfortable fullness that descends with every meal — these are the hallmarks of dyspepsia, a word derived from the Greek for "bad digestion." For millions of Australians, these upper gut symptoms are a daily reality. Most assume they have reflux, reach for an antacid, and never look deeper. But for a significant proportion of people — perhaps as many as one in ten adults — the symptoms are not explained by reflux, ulcers, or any visible abnorm

Every year, thousands of Australians are reassured that there is nothing seriously wrong with their bowel. The cramping, diarrhoea, bloating, and urgency disrupting their daily lives are often attributed to irritable bowel syndrome (IBS). This is a functional condition that is uncomfortable but not dangerous. For many, this reassurance is accurate and appropriate. However, for a significant number of patients, the symptoms labelled as IBS may actually indicate the early or ac

You had a food poisoning episode overseas — perhaps in Bali, Vietnam, or India. Or a bout of Giardia picked up from a contaminated water source on a camping trip. Or perhaps it was Dientamoeba fragilis, the gut parasite that took months to diagnose and weeks to treat with targeted antibiotic therapy. Whatever the cause, your doctor confirmed the infection has cleared. The pathology results are negative. The parasites are gone. And yet, weeks or months later, you are still blo

Your abdomen expands like a balloon after every meal. You look six months pregnant by dinner time, regardless of what you eat. The gas is relentless, the cramping unpredictable, and your bowel habits swing between diarrhoea and constipation without any discernible pattern. You have tried the low-FODMAP diet, probiotics, digestive enzymes, and every supplement your naturopath recommended. Nothing has made a lasting difference. If this sounds familiar, there is a strong chance

For many patients with chronic bloating, abdominal pain, excessive gas, and unpredictable bowel habits, the cause of their symptoms remains a mystery despite rounds of blood tests, stool tests, and even imaging. They are told their results are normal, given a diagnosis of irritable bowel syndrome, and left to manage as best they can. But there is a test that can reveal what blood tests and scans cannot — and it is as simple as breathing into a collection device. Functional br