For "strategies and policies to enhance the demand for nutritious food" (CFS/2016/43/inf.21, p.3), I think that awareness-raising starting at very young age could be useful.  Children when understanding what nutritious food means for him/herself can share the knowledge home with other family members.  Knowledge sharing with a bottom-up approach can influence the behaviour of people and can complement public authorities' top-down approach to reduce malnutrition.