Metabolic and Diagnostic Perspectives on Secondary Lactose Intolerance in Infants Through Fecal Lactose Measurement and Gut Microbiome Analysis - Scorecard - MDSpire

Metabolic and Diagnostic Perspectives on Secondary Lactose Intolerance in Infants Through Fecal Lactose Measurement and Gut Microbiome Analysis

  • By

  • Jian Kuang

  • Mengmei Zhang

  • Xiangyu Bian

  • Xin Wang

  • Xiaoqiong Li

  • Qingbin Wu

  • Jinjun Li

  • April 21, 2026

  • 0 min

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Clinical Scorecard: Metabolic and Diagnostic Perspectives on Secondary Lactose Intolerance in Infants Through Fecal Lactose Measurement and Gut Microbiome Analysis

At a Glance

CategoryDetail
ConditionSecondary Lactose Intolerance (SLI)
Key MechanismsSecondary lactase deficiency due to mucosal damage, altered microbial fermentation, and dysbiosis.
Target PopulationInfants, particularly in China.
Care SettingPediatric care, gastroenterology.

Key Highlights

  • Higher residual fecal lactose and lactate levels in SLI infants.
  • Reduced fecal short-chain fatty acids (SCFAs) availability.
  • Marked depletion of beneficial gut microbiota (Bacteroidetes, certain Firmicutes).
  • Increased gas-associated taxa (e.g., Clostridium) in SLI samples.
  • Residual fecal lactose may serve as a non-invasive indicator of SLI.

Guideline-Based Recommendations

Diagnosis

  • Consider residual fecal lactose measurement as a non-invasive diagnostic tool.
  • Evaluate gut microbiota composition and metabolic profiles.

Management

  • Explore nutritional or probiotic interventions based on microbiota analysis.

Monitoring & Follow-up

  • Regular assessment of fecal lactose and SCFA levels.

Risks

  • Potential for osmotic diarrhea and gastrointestinal discomfort due to lactose malabsorption.

Patient & Prescribing Data

Infants experiencing symptoms of lactose intolerance.

Focus on dietary modifications and potential probiotic therapies to restore gut microbiota balance.

Clinical Best Practices

  • Utilize non-invasive diagnostic methods for infants.
  • Monitor gut microbiota changes in response to dietary interventions.
  • Educate caregivers on recognizing symptoms of lactose intolerance.

References

Original Source(s)

Metabolic and Diagnostic Perspectives on Secondary Lactose Intolerance in Infants Through Fecal Lactose Measurement and Gut Microbiome Analysis

  • by Jian Kuang, Mengmei Zhang, Xiangyu Bian, Xin Wang, Xiaoqiong Li, Qingbin Wu, Jinjun Li

  • April 21, 2026

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