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Preventing low birthweight and reduction of child mortality
1Centre for International Child Health, Institute of Child Health, London WC1N 1EH, UK.
Insights
Improving birthweight is crucial for reducing child mortality, especially from malnutrition. Even small increases in birthweight significantly lower neonatal mortality rates.
Area of Science:
- Maternal and child health
- Nutritional science
- Public health interventions
Background:
- Child mortality is often linked to malnutrition, affecting mild to moderate cases across populations.
- Low birthweight is a significant risk factor for neonatal mortality, with optimal outcomes for infants over 3.5 kg.
- Fetal and infant growth periods, heavily influenced by maternal nutrition, are critical determinants of child health.
Purpose of the Study:
- To highlight the underappreciated role of birthweight improvement in reducing child mortality.
- To emphasize the population-level impact of interventions affecting birthweight.
- To discuss strategies for enhancing maternal nutritional status and preventing low birthweight.
Main Methods:
- Analysis of the relationship between birthweight and child/neonatal mortality.
- Review of the impact of maternal nutrition on fetal and infant growth.
- Discussion of public health programs and initiatives, including micronutrient supplementation.
Main Results:
- A 100 g increase in mean birthweight is associated with a 30-50% reduction in neonatal mortality.
- Maternal food supplementation shows significant biological impact on birthweight distribution, despite small mean increases.
- Mild and moderate malnutrition are prevalent causes of pre-school age child mortality.
Conclusions:
- Improving birthweight is a vital, yet often overlooked, strategy for reducing child mortality.
- Maternal nutrition programs are essential for improving birthweight and overall child survival.
- Initiatives like multiple micronutrient supplementation hold promise for preventing low birthweight.
Abstract:
Surprisingly little attention is paid to birthweight improvement as a means of reducing child mortality. Half of the 10 million pre-school-age children that die each year have malnutrition as an underlying or associated cause. Furthermore, the majority of these deaths are associated with the mild and moderate forms of malnutrition, reflecting how this effect is manifest across the whole population distribution. Similar relationships are seen between birthweight and neonatal mortality, with the least risk of neonatal death occurring in children born weighing more than 3.5 kg. Child malnutrition is increasingly recognized to be largely determined during the period of fetal and infant growth, when maternal nutrition has its strongest influence. Although the effects of maternal food supplements on mean birthweight are relatively small, because of their influence across the population distribution they have great biological significance. An increase of 100 g in mean birthweight is associated with a 30-50% reduction in neonatal mortality. The programmes that need to be put in place to improve maternal nutritional status are discussed, and the programme initiatives being promoted by UNICEF to prevent low birthweight, including multiple micronutrient supplementation trials are further described.