Changing patterns of under- and over-nutrition in South African children-future risks of non-communicable diseases
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Published on: July 29, 2020
Champaklal C Jinabhai1, Myra Taylor, Keith R Sullivan
1Department of Community Health, Nelson R. Mandela School of Medicine, University of Natal, Durban, South Africa.
Insights
South African children show concerning rates of both undernutrition (stunting, wasting) and overnutrition (overweight, obesity). This dual burden indicates a changing nutritional landscape requiring urgent intervention to prevent future non-communicable diseases.
Area of Science:
- Pediatric Nutrition
- Public Health
- Nutritional Epidemiology
Background:
- Childhood malnutrition in KwaZulu-Natal, South Africa, presents a complex challenge.
- Previous studies have documented varying degrees of under- and over-nutrition in different child populations.
Purpose of the Study:
- To investigate the prevalence of under- and over-nutrition in children in KwaZulu-Natal.
- To compare nutritional status across different datasets and age groups.
- To identify trends and potential shifts in nutritional patterns.
Main Methods:
- Retrospective analysis of secondary data from four studies: National Schools Study, Vitamin A Consultative Group Study, Income Dynamics Study, and a primary dataset from a rural district.
- Assessment of stunting and wasting using WHO/NCHS guidelines.
- Evaluation of overweight and obesity using International Obesity Task Force guidelines.
- Comparison of nutritional indicators in children aged 4-5 and 8-11 years.
Main Results:
- Moderate stunting (10-25%), wasting (1-6%), overweight (5-24%), and obesity (1-10%) were observed.
- Girls exhibited a higher prevalence of overweight and obesity compared to boys.
- Boys showed a significantly higher prevalence of stunting and wasting.
- An increasing trend in overweight and obesity was noted across both age groups.
Conclusions:
- Co-existing stunting and overweight/obesity suggest a nutritional transition in South African children.
- Urgent public health action is needed to address this dual burden of malnutrition.
- Interventions should focus on preventing future non-communicable diseases associated with changing nutritional patterns.
Abstract:
Under- and over-nutrition in children in KwaZulu-Natal, South Africa was investigated comparing data collected from primary school children in a rural district (643 children aged 8-11 years in 1994) with secondary data from the National Schools Study (16,179 children, 4-11 years in 1994), the Vitamin A Consultative Group Study (408 children, 2-5 years in 1994) and the Income Dynamics Study (1,593 children, 2-11 years in 1998). Stunting and wasting (WHO/NCHS guidelines) and overweight and obesity (International Obesity Task Force guidelines) were retrospectively analysed from these studies and compared in the children aged 4-5 and 8-11 years. There was moderate stunting in 10-25%, wasting in 1-6%, 5-24% were overweight and 1-10% obese. Girls in the National Schools Study (p<0.005) and in the primary datasets (p=0.02) had a significantly higher prevalence of overweight than boys; girls (1.4%) were also more obese than boys (0.9%) in the Schools Study (p=0.002), and the boys significantly more stunted (p<0.005) and wasted (p<0.005). An increasing prevalence of overweight and obesity was seen in both the 4-5- and 8-11-year age-groups. The finding that moderate stunting co-exists with overweight and obesity suggests that patterns of under- and over-nutrition in South African children are changing and might indicate the early stages of a complex nutritional transition. Action is required to prevent the future risk of non-communicable diseases.
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