Abstract
Target 12.3 of the SDGs calls for halving per capita global food waste at the retail and consumer levels, and reducing food losses along production and supply chains. This paper discusses recent developments on the definitions and methodologies for this target indicator. A waste sorting analysis is recommended as a means of grasping the nature of food waste discharged from households, and efforts for devising an internationally applicable method is also described. The total amount of food wastage across all stages of food supply and consumption activities can be estimated through food balance sheets and nutrition survey results. The author's detailed time series analysis for Japan is presented, as well as the work of other researchers using a similar approach.
