Whydoes food loss and wastematter for food security-from the perspective of causeand magnitude

Food security has raised crisis alarms all over the world. Especially nowadays, conventional agriculture is threatened by climate change and extreme weather, agri-food system loading increasing population burden. loss waste (FLW) have gotten more attention. Still, main research focus on a narrowed specific stage of food value chain types in particular area, which lacks an overall comprehensive understanding this topic from broad view. This review aims to provide description useful theoretical background public decision-makers individuals reduce for better sustainable society, economy, environment. Secondary content analysis are used as methodology, following Michael E. Porter’s theory, analyze simplify path (in light cause magnitude based nexus between across entire (from manifestation FLW: agricultural production stages, such cultivation or breeding storage, post-harvest processing distribution, retail consumption. We also provided Ishikawa model diagram explain causes waste. And other manifestations, COVID-19 Russia Ukraine war). To conclude, reducing crucial security, but FLW differ different types. Generally speaking, sees most loss, while consumption Therefore, we suggest both private should be aware that producing utilizing resources properly along stages equally important.