Catch-up growth does not associate with cognitive development in Indian school-age children

Area of Science:

• Pediatric Nutrition
• Developmental Psychology
• Public Health

Background:

• Childhood stunting is a significant risk factor for lifelong health issues and impaired cognitive development.
• While research exists on stunting and cognition in younger children, its impact on school-aged populations remains under-explored.
• This study investigates the long-term cognitive consequences of stunting in school-aged children.

Purpose of the Study:

• To assess the relationship between stunting and cognitive performance in school-aged children.
• To determine if nutritional interventions can improve cognitive function in stunted school-aged children.
• To explore the potential for catch-up growth in cognitive abilities after nutritional interventions.

Main Methods:

• Utilized data from three nutritional intervention studies conducted over four years in Bangalore, India.
• Administered a comprehensive battery of cognitive tests to assess performance across four domains.
• Cognitive tests were repeated after a six-month intervention period to evaluate changes in cognitive status.

Main Results:

• Stunted children exhibited significantly poorer performance in short-term memory, retrieval ability, and visuospatial skills.
• No significant differences were observed in cognitive score improvements between children who remained stunted and those who recovered.
• Cognitive advancements following nutritional interventions were not significantly different between the groups over the six-month period.

Conclusions:

• Childhood stunting is demonstrably associated with reduced cognitive abilities in school-aged children.
• Reversing the cognitive deficits associated with stunting in this age group appears challenging.
• Early and sustained nutritional support is crucial to mitigate long-term cognitive impairments.