Thank you for posting this discussion topic -- as a horticultural scientist and educator, this subject has been of keen interest to me for many years. "Food security" seems to be measured in terms of people's access to calories, putting high calorie staple food like grains and root crops in the forefront, while most fruits and vegetables, excellent sources of nutritious vitamins, minerals and micro-nutrients, have been largely neglected. Even when hort crops have been included in research studies or field based projects, the focus has stayed on increasing production, while only 5% of global ag dev resources have gone to postharvest aspects (the reduction of the current high rate of postharvest losses, and the maintainence of quality, food safety and nutritonal value). I would hope the term "Food and nutrition security" would better capture some of these missing elements.
Related links and resources:
The paper Coming to terms with terminology also available in in:
Arabic, Chinese and Russian
Nutrition-focused online consultation on the CFS Terminology Paper
Committee on World Food Security (CFS)
United Nations Standing Committee on Nutrition (UNSCN)
CFS37 Final Report, 2011 (PDF)
FSN Forum Discussion: Do current Food Security concepts serve the fight against hunger?