Ultra-Processed Food Consumption and Irritable Bowel Syndrome: Current Evidence and Clinical Implications

Area of Science:

• Gastroenterology and Nutrition Science

Background:

• Irritable bowel syndrome (IBS) is a common gut-brain interaction disorder impacting quality of life.
• Global consumption of ultra-processed foods (UPF) is rising, with links to chronic diseases.

Purpose of the Study:

• To review evidence on the association between UPF consumption and IBS.
• To explore mechanistic insights and clinical implications.

Main Methods:

• Narrative review synthesizing epidemiological, experimental, and clinical studies.
• Analysis of observational data on UPF intake and IBS risk.
• Examination of mechanistic pathways involving food additives.

Main Results:

• Observational studies suggest higher UPF intake correlates with increased IBS risk, though evidence is limited.
• Mechanistic studies show UPF additives can alter gut microbiota, impair intestinal barrier, and promote inflammation.
• Current evidence indicates a potential link between UPF and IBS.

Conclusions:

• Reducing UPF intake and improving dietary quality are potential complementary strategies for IBS management.
• Further intervention trials are needed to confirm the link and explore underlying biological mechanisms.