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- Hallström, Elinor, et al.
(författare)
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Dietary environmental impacts relative to planetary boundaries for six environmental indicators – A population-based study
- 2022
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Ingår i: Journal of Cleaner Production. - : Elsevier Ltd. - 0959-6526 .- 1879-1786. ; 373
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Tidskriftsartikel (refereegranskat)abstract
- The environmental impact of Swedish diets was assessed for six indicators (greenhouse gas [GHG] emissions, cropland use, nitrogen application, phosphorus application, consumptive water use and extinction rate), using self-reported food intake within two population-based cohorts of men and women, 56–96 years of age. The dietary environmental impact was assessed in relation to per capita planetary boundaries, overall and by population subgroups, addressing the relative importance of specific foods and food groups. The total average dietary impact exceeded the planetary boundaries by 1.6 to 4-fold for five of the six environmental indicators; consumptive water use did not exceed the boundaries. Comparing the highest with lowest quintiles of the population impact showed >2.5-fold differences across all environmental indicators. Of the diet's total average environmental impact, animal-based, plant-based and discretionary foods accounted for 28–83%, 8–40% and 9–37%, respectively, across the six indicators. Animal-based foods dominated the impact on GHG emissions, cropland use and nitrogen and phosphorus application, while plant-based and discretionary foods contributed more to consumptive water use and extinction rate. Environmental impact was driven predominantly by consumption of red meat, dairy, fresh fruit and coffee. The findings show major challenges in affluent countries that have to be addressed to achieving sustainable food production systems and diets. They provide guidance on critical food groups, environmental indicators and population subgroups to prioritize in future efforts to reduce the environmental impact. © 2022 The Authors
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| 2. |
- Hallström, Elinor, et al.
(författare)
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Dietary climate impact : Contribution of foods and dietary patterns by gender and age in a Swedish population
- 2021
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Ingår i: Journal of Cleaner Production. - : Elsevier BV. - 0959-6526 .- 1879-1786. ; 306
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Tidskriftsartikel (refereegranskat)abstract
- Dietary climate impact in a Swedish population (56–95 years old) was estimated based on self-reported food intake from 50 000 men and women within two population-based cohorts and on climate data, covering emissions from farm to fork, for 600 foods representative for the Swedish market. Aims were to assess variation in dietary climate impact between population groups and between food categories. Mean dietary climate impact was 2.0 tons of CO2e/person/year, with about a threefold variation between high and low impact individuals. Food loss and waste accounted for 18%. Older individuals and women on average had lower total dietary climate impact per year, while differences between gender were smaller per 1000 kcal. Climate impact was greatly affected by dietary composition and especially by the content of animal-based and discretionary foods, responsible for 71% and 12% of total climate impact, respectively. Results indicate a large potential for reduced climate impact by adopting realistic dietary patterns. Suggested strategies to reach climate goals include reduction of red meat and prioritising lower impact foods within meat, dairy and seafood categories, limited consumption of discretionary foods and decreased over-consumption of total calories, combined with improvements in production including reduction of food loss and waste.
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