Sucrose is a common dietary sugar made up of two simple sugars: fructose (fruit sugar) and glucose. It is naturally present in foods but is most commonly consumed as table sugar, which is derived from sugar cane or sugar beets. You may also see it referred to as cane sugar, beet sugar, or table sugar.

For most people, sucrose is easily digested. However, in some individuals the body has difficulty breaking down this sugar due to a lack of a digestive enzyme called sucrase.

When sucrose appears in the stool, it can indicate that the body is unable to properly digest and absorb this sugar. This condition is known as sucrose intolerance, which is considered a non-allergic food intolerance rather than a food allergy.

The Role of the Sucrase Enzyme

The enzyme sucrase is produced in the lining of the small intestine. Its role is to break down sucrose into its two components—glucose and fructose—so that they can be absorbed into the bloodstream and used for energy.

When sucrase levels are low or deficient, sucrose is not properly broken down. Instead, the undigested sugar passes through the digestive tract into the colon.

In the colon, sucrose becomes food for intestinal bacteria and yeast. This fermentation process can lead to:

• Gas production
• Bloating
• Digestive discomfort
• Changes in bowel habits

Over time, excessive fermentation may also contribute to gut microbial imbalance, including the overgrowth of certain bacteria or yeast such as Candida.

Why Undigested Sugars Cause Digestive Problems

Sucrose belongs to a group of sugars called disaccharides, which contain two simple sugar molecules. When these sugars are not properly digested in the small intestine, they move into the large intestine undigested.

This can trigger several digestive reactions:

• Fermentation by gut bacteria
• Excess gas production
• Irritation of the intestinal lining
• Increased intestinal motility (leading to diarrhea)

For some individuals, this may also disrupt the balance of gut flora and encourage yeast or Candida overgrowth.

Common Symptoms of Sucrose Intolerance

People with sucrose intolerance may experience a range of digestive and systemic symptoms after consuming sugar-containing foods. Common symptoms include:

• Difficulty digesting sugary foods
• Diarrhea or constipation
• Excess gas and flatulence
• Abdominal bloating or cramps
• Nausea or vomiting
• Headaches
• Hypoglycemia or blood sugar fluctuations
• Nervousness or anxiety
• Heart palpitations
• Poor weight gain or nutritional deficiencies
• Candida overgrowth

Symptoms often appear shortly after eating foods that contain high amounts of sucrose.

Possible Underlying Causes

Irritable bowel syndrome (IBS)
Digestive disorders can affect enzyme production and gut function.

Genetic factors
Some people are born with a reduced ability to produce the sucrase enzyme.

Aging
Digestive enzyme production may naturally decline as we get older.

Diseases affecting the small intestine
Conditions that damage the intestinal lining can reduce enzyme production.

Gut microbiome imbalance
Imbalances in gut bacteria can further impair digestion and increase fermentation.

Foods to Limit if You Have Sucrose Intolerance

Reducing foods that contain high amounts of sucrose or sugar may help relieve symptoms and allow the digestive system time to recover. Foods commonly high in sucrose include:

• Table sugar
• Soft drinks and sweetened beverages
• Candy and desserts
• Processed foods containing added sugar
• Certain fruits (in large quantities)
• Sweet baked goods
• Syrups and sweet sauces

Reducing refined sugar intake can significantly reduce digestive symptoms for many people.

Naturopathic Approaches to Support Digestion

Naturopathic medicine focuses on addressing the root cause of digestive imbalance while supporting gut health and enzyme production.

Support Digestive Enzymes

Digestive enzyme supplements containing sucrase or broad-spectrum enzymes may help break down sugars and reduce fermentation.

These are often taken with meals to assist digestion.

Restore Healthy Gut Flora

A balanced microbiome helps improve digestion and reduce fermentation. After antibiotic use, it is often beneficial to take a high-quality probiotic supplement to help restore healthy gut bacteria. Fermented foods such as yogurt, kefir, sauerkraut, and kimchi may also support gut health.

Support Gut Healing

If the intestinal lining is inflamed or damaged, digestion may be impaired. Naturopathic approaches often include nutrients that support gut repair, such as:

• L-glutamine
• Zinc
• Omega-3 fatty acids
• Anti-inflammatory herbal medicines
• Reduce Refined Sugar Intake

Limiting refined sugars and processed foods reduces stress on the digestive system and may help restore enzyme activity. Choosing whole foods with balanced protein, fiber, and healthy fats can help stabilize blood sugar and support digestive health.

Traditional Wisdom and Old-Fashioned Remedies

Many traditional dietary practices align with modern naturopathic understanding of digestion.

Some long-standing digestive tips include:

• Eating slowly and chewing food thoroughly to help the body produce digestive enzymes
• Avoiding excessive sweets, a common recommendation from older generations
• Taking a short walk after meals to support digestion
• Using bitter herbs or greens before meals to stimulate digestive juices

These simple habits have long been used to support healthy digestion.

A Naturopathic Perspective

Sucrose intolerance is often a sign that the digestive system requires additional support. By improving enzyme activity, restoring healthy gut bacteria, and reducing excess sugar intake, many people can significantly improve digestive function. Rather than simply eliminating foods, naturopathic care focuses on supporting the digestive system so the body can function more efficiently and comfortably.