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Diarrhoea and malnutrition interaction.

¹Division of Pediatric Gastroenterology and Nutrition, Department of Pediatrics, Lady Hardinge Medical College & Kalawati Saran Children's Hospital, New Delhi.

Indian Journal of Pediatrics

|January 2, 2001

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Diarrhoea significantly hinders child growth, causing weight loss and increasing malnutrition risks. Addressing this requires preventing disease spread and enhancing nutritional support during illness.

Area of Science:

Pediatrics
Nutrition Science
Infectious Diseases

Background:

Diarrhoea negatively impacts child physical growth and development, with each illness day causing weight deficit.
Malnutrition, especially wasting, predicts longer diarrhoea duration, exacerbating nutritional faltering and increasing mortality risk.

Purpose of the Study:

To elucidate the complex interaction between diarrhoea and malnutrition in children.
To identify mechanisms through which diarrhoea affects nutritional status and vice versa.

Main Methods:

Review of epidemiological studies and known pathophysiological mechanisms.
Analysis of the impact of infectious diarrhoea on nutrient absorption, host defenses, and mucosal integrity.

Main Results:

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Diarrhoea leads to weight loss and impaired 'catch-up growth', particularly in malnourished children.
Mechanisms include poor intake, malabsorption, altered gut function, and cytokine-induced malnutrition.
Pre-existing malnutrition delays recovery and increases susceptibility to severe diarrhoea and other infections.

Conclusions:

The diarrhoea-malnutrition interaction forms a dangerous cycle that requires multifaceted interventions.
Key strategies include disease transmission prevention (hygiene, safe water, breastfeeding), improved host defenses (nutrition, vaccines), and robust case management with nutritional support.