01 December 2016, Rome Italy - Anna Herforth, Independent Consultant, United States of America. Symposium sub-theme 1: Supply Side Policies and measures for diversifying food production and for increasing availability and affordability of nutritious food for healthy diets. FAO/WHO International Symposium on Sustainable Food Systems for Healthy Diets and Improved Nutrition, Opening Session. FAO headquarters (Sheikh Zayed Centre).