Nutritional and Health-Related Environmental Studies (NAHRES) Optimising nuclear techniques to assess vitamin A status and the risk of excess vitamin A intakes due to multiple vitamin A programmes

The proposed CRP will contribute to a better understanding of the appropriate use of the stable isotope dilution technique to assess vitamin A status across the continuum from deficiency to toxicity in children under the age of 5 years. The findings will provide guidance for programme managers and public health nutrition policy makers to improve the evaluation of their vitamin A programmes, in particular in countries where multiple vitamin A interventions are in place, and enable them to improve national nutrition strategies and plans.