Questo Link non esiste nella tua lingua, Vedi in: English (en),
Oppure utilizzare Google Translate:  

http://www.fao.org/3/al936e/al936e00.pdf

Food security exists when all people, at all times, have physical and economic access to sufficient safe and nutritious food that meets their dietary needs and food preferences for an active and healthy life. - 1996 World Food Summit