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Damerau, Kerstin

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Damerau

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Kerstin

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Damerau, Kerstin

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    The Impact of Nutrient-Rich Food Choices on Agricultural Water-Use Efficiency
    (Springer Science and Business Media LLC, 2019-03) Damerau, Kerstin; Herrero, Mario; Waha, Katharina
    When distributed equally, the total amount of food produced worldwide could sufficiently meet current global demand. Still, malnutrition in the form of nutrient deficiencies continues to prevail in both low- and high-income countries. At the same time, natural resource use for agriculture is reaching or exceeding environmental boundaries. By integrating a comprehensive micro-nutrient scoring method with data on agricultural water demand, this analysis aims at re-evaluating global water use efficiency of dietary nutrient production. A stronger reliance on more nutrient-dense foods could lead to higher water use efficiencies, though dietary water footprints were likely to increase overall. With a more detailed focus on plant and animal foods, we find that most dietary protein sources show comparable water use efficiencies, and thus can be drivers for agricultural water demand. Yet, animal foods, besides having a unique nutrient profile, often do not compete directly with crops for the same water resources. A significant reduction in the demand for utilizable freshwater resources could, however, be achieved by reducing the amount of feed crops in ruminant diets.
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    Life expectancy and agricultural environmental impacts in Addis Ababa can be improved through optimized plant and animal protein consumption
    (Springer Science and Business Media LLC, 2021-04-21) Blakstad, Mia; Danaei, Goodarz; Tadesse, Amare; Damerau, Kerstin; Bellows, Alexandra; Canavan, Chelsey; Bliznashka, Lilia; Zack, Rachel; Myers, Samuel S; Berhane, Yemane; Fawzi, Wafaie
    In Ethiopia, children and adults face a double burden of malnutrition, with coexisting undernutrition, stunting, and non-communicable diseases. Here, we use a framework of comparative risk assessment, local dietary surveys, and relative risks from large observational studies to quantify the health and environmental impacts of meeting adult and child recommended daily protein intakes in urban Addis Ababa. We find that plant-based foods, especially legumes, would have the lowest environmental impact and substantially increase life expectancy in adults, whilst animal-sourced proteins could be beneficial for children. This context-specific approach – accounting for regional constraints and trade-offs – can aid policy makers in developing culturally appropriate, nutritionally adequate and sustainable dietary recommendations.