The March 2014 IAEA Bulletin issue focuses exclusively on the Agency?s work on nutrition. Indeed the IAEA has been harnessing nuclear science and technology for the improvement of global nutrition for decades, developing various techniques and adapting to different situations. Thus, after an introductory word by Director General Yukiya Amano, this edition?s articles examine the IAEA?s contributions to nutrition programmes around the world with isotopic techniques, often through its Technical Cooperation programme with Member States or partnerships with international organizations. The IAEA also helps Member States build and establish nutrition-oriented scientific capacities, and works with them to detect gastrointestinal bacterial infections, to assess breastfeeding or to reduce childhood obesity. This Bulletin issue ends with testimonies from members of institutions across the world involved in IAEA-supported nutrition programmes.