文章基本信息

标题：Diet Quality and Water Scarcity: Evidence from a Large Australian Population Health Survey
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作者：Bradley G. Ridoutt ; Danielle Baird ; Kimberley Anastasiou 等
期刊名称：Nutrients
电子版ISSN：2072-6643
出版年度：2019
卷号：11
期号：8
页码：1846-1860
DOI：10.3390/nu11081846
出版社：MDPI Publishing
摘要：There is widespread interest in dietary strategies that lower environmental impacts. However, various forms of malnutrition are also widely prevalent. In a first study of its kind, we quantify the water-scarcity footprint and diet quality score of a large (>9000) population of self-selected adult daily diets. Here, we show that excessive consumption of discretionary foods—i.e., energy-dense and nutrient-poor foods high in saturated fat, added sugars and salt, and alcohol—contributes up to 36% of the water-scarcity impacts and is the primary factor differentiating healthier diets with lower water-scarcity footprint from poorer quality diets with higher water-scarcity footprint. For core food groups (fruits, vegetables, etc.), large differences in water-scarcity footprint existed between individual foods, making difficult the amendment of dietary guidelines for water-scarcity impact reduction. Very large reductions in dietary water-scarcity footprint are possible, but likely best achieved though technological change, product reformulation and procurement strategies in the agricultural and food industries.
关键词：dietary guidelines; discretionary food; life cycle assessment; sustainable diet; sustainable food production; sustainable food systems; water footprint; water use dietary guidelines ; discretionary food ; life cycle assessment ; sustainable diet ; sustainable food production ; sustainable food systems ; water footprint ; water use