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Growth of previously well-nourished infants in poor homes
Insights
Adequate nutrition in early childhood, even with protected environments, did not prevent stunting once infants returned to very poor conditions. This suggests that childhood stunting may be an adaptive response to impoverished environments.
Area of Science:
- Pediatrics
- Human Growth and Development
- Nutritional Science
Background:
- Poverty and malnutrition significantly impact child development.
- Early childhood growth trajectories are crucial for long-term health outcomes.
Purpose of the Study:
- To investigate the long-term effects of nutritional intervention on growth in infants from impoverished backgrounds.
- To determine if early growth catch-up in a protected environment prevents stunting upon return to adverse conditions.
Main Methods:
- Twenty-six infants from very poor families received adequate diets in protected environments until an average of 17.6 months.
- Growth parameters (length, weight, head circumference) were monitored during intervention and for six months post-intervention.
- Growth patterns were compared to established environmental norms.
Main Results:
- Infants showed improved growth during the intervention, with lengths reaching the 10th-25th percentiles and weights reaching the 50th-75th percentiles.
- Post-intervention, infants experienced growth cessation and weight loss, declining to environmental norms.
- Head circumference growth paralleled linear growth, and stunting persisted until 4-8 years of age.
Conclusions:
- Maximal growth achieved in early childhood does not protect against stunting in very poor environments.
- Childhood stunting in such environments may represent an adaptive mechanism.
- Sustained improvements require addressing the underlying socioeconomic and environmental factors contributing to poverty.
Abstract:
Twenty-six infants from very poor families were assured adequate diets in protected environments to average age 17.6 months. Ten female infants' mean length reached the tenth percentile and sixteen males' the 25th; female infants' mean weight nearly reached the 50th and males', the 75th. "Norms" in similar environments are near the third percentile for length and the tenth for weight, from infancy through childhood. Six months after returning to original homes there was no further growth in length or head circumference and a mean weight loss of 800 gm, thus declining to environmental norms. Growth followed these patterns until 4 to 8 years of age. Head circumference paralleled linear growth. In very poor environments, nearly maximal growth during the first two years of life apparently does not protect against the characteristic stunting, which may represent an appropriate adaptation.