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FAO: Food and Nutrition
http://www.fao.org/es/ESN/index_en.stm

During the past few decades, there has been an increased concern over food safety and quality and human nutrition across the globe. A number of large international organizations have begun to bring their expertise and knowledge to the Web, and this site, developed by the Food and Agriculture Organization (FAO) of the United Nations is a good resource of information on these (and other) topics.
The site includes a section on human nutrition, where visitors can view detailed country-level nutrition reports and national reports and strategies to combat the ever-growing problem of nutritional deficiencies. The food safety-and-quality area contains information about the capacity-building of food control systems and programs at the national and local level, along with scientific assessments of food safety. The site also contains a link to a number of usefull statistical databases.