Atoms for Nutrition: IAEA's Contribution to Tackling Malnutrition.

Nuclear techniques, including stable isotope techniques, provide great potential for understanding nutrition and human health with better accuracy and precision compared with other routine techniques. The International Atomic Energy Agency (IAEA) has been at the forefront for more than 25 y to offer guidance and support on the use of nuclear techniques. This article demonstrates how the IAEA has enabled its Member States to contribute to good health and well-being in their countries and to assess progress toward achieving global nutrition and health targets to combat malnutrition in all its forms. Support is provided in several ways including research, capacity building, education, and training as well as the provision of guidance materials. The nuclear techniques help to objectively measure nutritional and health-related outcomes such as body composition, energy expenditure, nutrient uptake, and body stores and assess breastfeeding practices as well as environmental interactions. These techniques are continuously improved to make nutritional assessments more affordable and less invasive with wide use in field settings. New research areas are emerging to assess diet quality with changing food systems and to explore stable isotope-assisted metabolomics to address key questions on nutrient metabolism. Through a deeper understanding of mechanisms, nuclear techniques can contribute to eradicating malnutrition worldwide.