Stunting Persists despite Optimal Feeding: Are Toilets Part of the Solution?

Area of Science:

• Pediatrics
• Public Health
• Gastroenterology

Background:

• Children in developing nations exhibit stunted linear growth from birth, worsening by 24 months.
• Complementary feeding shows limited efficacy in improving growth outcomes.
• Poor sanitation and hygiene lead to frequent microbial exposure via feco-oral transmission, contributing to enteric diseases.

Purpose of the Study:

• To investigate the role of environmental enteric dysfunction (EED) in impairing linear growth in infants.
• To explore the potential of improving water, sanitation, and hygiene (WASH) interventions to mitigate EED and promote growth.

Main Methods:

• The study examines the characteristics of EED, including structural and functional gut disturbances.
• It analyzes the association between markers of intestinal inflammation, permeability, and systemic immune activation with linear growth.
• The research considers the impact of reducing microbial transmission through WASH improvements.

Main Results:

• Environmental enteric dysfunction (EED) is linked to impaired gut structure and barrier function, allowing microbial translocation and systemic inflammation.
• Early-life gut damage and inflammation markers are inversely correlated with linear growth.
• Acute diarrhea is a symptom of a larger burden of chronic, subclinical enteropathy.

Conclusions:

• Environmental enteric dysfunction (EED) is a significant factor in growth faltering in developing countries.
• Improving water, sanitation, and hygiene (WASH) is a promising strategy to prevent or reduce EED and enhance infant growth.
• Multisectoral approaches, combining WASH with improved infant feeding, are essential for optimizing child growth and development.