Lactose & Fructose Intolerance

What Is Lactose & Fructose Intolerances?

Lactose and fructose intolerances occur when your digestive system has trouble breaking down specific types of sugars, lactose (found in dairy) and fructose (found in fruit, honey and some vegetables or processed foods). When these sugars aren’t properly absorbed in the small intestine, they ferment in the gut and can lead to uncomfortable symptoms like bloating, pain, and altered bowel habits.

Unlike food allergies, these intolerances don’t involve the immune system. They are typically caused by enzyme deficiencies or absorption issues and are often dose-dependent, meaning symptoms worsen the more you consume. Many people live with these intolerances without realising what’s triggering their symptoms. Identifying the source can bring a huge sense of relief and open up a clearer path forward.

Common Signs and Symptoms

• Bloating or abdominal distension
• Cramping or abdominal discomfort
• Loose stools or diarrhoea
• Excessive gas or flatulence
• Nausea after eating certain foods
• Urgency or irregular bowel movements
• Fatigue or brain fog after meals

Root Causes and Contributing Factors

Lactose intolerance is often due to a reduced ability to produce lactase, the enzyme that breaks down lactose. Fructose malabsorption, on the other hand, occurs when the small intestine has difficulty absorbing fructose, which may be influenced by stress, gut inflammation, microbial imbalance, or underlying digestive conditions like irritable bowel symptoms or SIBO. Poor gut integrity, food intolerances, and enzyme function all play a role. If you feel unsure about what foods are causing your symptoms, a deeper look with testing can help bring clarity.

How We Can Help at MNMC

At MNMC, we use evidence-based testing to help uncover whether lactose or fructose intolerance is playing a role in your digestive symptoms. Your practitioner will start with a full health history to understand your symptoms, diet, and gut health before recommending a breath test, which is a simple, non-invasive way to assess how well your body is absorbing these sugars.

With your results, we will guide you through a tailored plan that may include short-term dietary changes, gut healing support, and strategies to improve digestion and reduce reactivity. Our goal is to help you feel more confident in your food choices and more comfortable in your body.

Ready to Stop the Guesswork and Support Your Gut?

If you’re experiencing bloating, discomfort, or irregular digestion and suspect certain foods may be to blame, we’re here to help you find clarity. Book a consultation at Melbourne Natural Medicine Clinic to explore a tailored health solution and uncover the root cause with clear, accurate testing.