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Sustainable diets are an environmental, economic, and public health imperative, but identifying clear intervention points is challenging. Decision-making will require descriptive analyses from a variety of perspectives, even under the inevitable uncertainty introduced by limited data. This study uses existing data to provide a diet-level perspective on environmental impact from food production in the case study countries of Vietnam and Kenya.

FAO food supply data at decadal time steps were used as a proxy for national average diets in Vietnam and Kenya. We combined these data with estimates of the greenhouse gas emissions (GHGE) and water use impact associated with producing food commodities. Generic GHGE factors were derived from a survey of the life cycle assessment literature. Country- and commodity-specific blue water use estimates were used, reflecting country-of-origin for …