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Evaluating the GHG emissions, land use, and water use associated with contemporary dietary patterns in the Republic of Ireland.

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Title: Evaluating the GHG emissions, land use, and water use associated with contemporary dietary patterns in the Republic of Ireland.
Authors: Burke, Daniel T.1,2 (AUTHOR), Hynds, Paul1 (AUTHOR), Priyadarshini, Anushree1,3 (AUTHOR) anu.priyadarshini@mu.ie
Source: Environmental Research. Apr2025, Vol. 270, pN.PAG-N.PAG. 1p.
Subjects: Dietary patterns, Plant-based diet, Veganism, Reducing diets, Product life cycle assessment, Vegetarian foods, Potatoes
Abstract: Dietary patterns are intrinsically linked to greenhouse (GHG) emissions, land use, and water use via food production systems. Analysing and comparing contemporary dietary patterns and their environmental impact is critical to identifying which should be promoted to enhance global sustainability. A cross-sectional survey of adult consumption patterns was conducted across Ireland with a representative sample size of 957 respondents. Subsequently, a farm-to-fork life cycle assessment (LCA) was employed via OpenLCA 2.0.4 to assess three primary environmental impacts (global warming, land use, and water use) across the population. Thirteen distinct dietary patterns were analysed: total population, rural, urban, self-reported (omnivore, flexitarian, pescatarian, vegetarian, and vegan), and data-derived ('meat-focused', 'dairy/ovo-focused', 'vegetable-focused', 'seafood-focused', and 'potato-focused'). Mean calculated diet-related GHG emissions were 5.52 kgCO 2 eq person−1 day−1, with the 'meat-focused' diet representing the highest (6.62 kgCO 2 eq person−1 day−1) and the vegan diet being the lowest (2.0 kgCO 2 eq person−1 day−1). The 'meat-focused' diet was also associated with the highest per capita land use. The estimated mean water usage was 104 L person−1 day−1, with the 'potato-focused' diet using the most water and the pescatarian diet using the least. Future (2050) dietary scenarios compared to 'business-as-usual' patterns were projected; findings suggest substantial environmental impact reductions could be achieved if segments of the Irish population transition to vegetarian, vegan, and 'vegetable-focused' diets. The authors consider that employing data-derived dietary patterns (as opposed to "traditional" dietary classification) in LCA studies may yield increasingly accurate results, as dietary definitions vary significantly between individuals. [Display omitted] • Thirteen distinct dietary patterns were assessed via farm-to-fork LCA. • Red meat exhibited high GHG emissions and resource use across dietary patterns. • Plant-based diets can reduce future dietary-related environmental impacts. • 'Vegetable-focused' diet can be adapted to specific cultural and climatic needs. • Data-driven diets in LCA studies may be more accurate than traditional diets. [ABSTRACT FROM AUTHOR]
Copyright of Environmental Research is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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  Data: Evaluating the GHG emissions, land use, and water use associated with contemporary dietary patterns in the Republic of Ireland.
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  Data: <searchLink fieldCode="AR" term="%22Burke%2C+Daniel+T%2E%22">Burke, Daniel T.</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hynds%2C+Paul%22">Hynds, Paul</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Priyadarshini%2C+Anushree%22">Priyadarshini, Anushree</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<i> anu.priyadarshini@mu.ie</i>
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  Data: <searchLink fieldCode="DE" term="%22Dietary+patterns%22">Dietary patterns</searchLink><br /><searchLink fieldCode="DE" term="%22Plant-based+diet%22">Plant-based diet</searchLink><br /><searchLink fieldCode="DE" term="%22Veganism%22">Veganism</searchLink><br /><searchLink fieldCode="DE" term="%22Reducing+diets%22">Reducing diets</searchLink><br /><searchLink fieldCode="DE" term="%22Product+life+cycle+assessment%22">Product life cycle assessment</searchLink><br /><searchLink fieldCode="DE" term="%22Vegetarian+foods%22">Vegetarian foods</searchLink><br /><searchLink fieldCode="DE" term="%22Potatoes%22">Potatoes</searchLink>
– Name: Abstract
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  Data: Dietary patterns are intrinsically linked to greenhouse (GHG) emissions, land use, and water use via food production systems. Analysing and comparing contemporary dietary patterns and their environmental impact is critical to identifying which should be promoted to enhance global sustainability. A cross-sectional survey of adult consumption patterns was conducted across Ireland with a representative sample size of 957 respondents. Subsequently, a farm-to-fork life cycle assessment (LCA) was employed via OpenLCA 2.0.4 to assess three primary environmental impacts (global warming, land use, and water use) across the population. Thirteen distinct dietary patterns were analysed: total population, rural, urban, self-reported (omnivore, flexitarian, pescatarian, vegetarian, and vegan), and data-derived ('meat-focused', 'dairy/ovo-focused', 'vegetable-focused', 'seafood-focused', and 'potato-focused'). Mean calculated diet-related GHG emissions were 5.52 kgCO 2 eq person−1 day−1, with the 'meat-focused' diet representing the highest (6.62 kgCO 2 eq person−1 day−1) and the vegan diet being the lowest (2.0 kgCO 2 eq person−1 day−1). The 'meat-focused' diet was also associated with the highest per capita land use. The estimated mean water usage was 104 L person−1 day−1, with the 'potato-focused' diet using the most water and the pescatarian diet using the least. Future (2050) dietary scenarios compared to 'business-as-usual' patterns were projected; findings suggest substantial environmental impact reductions could be achieved if segments of the Irish population transition to vegetarian, vegan, and 'vegetable-focused' diets. The authors consider that employing data-derived dietary patterns (as opposed to "traditional" dietary classification) in LCA studies may yield increasingly accurate results, as dietary definitions vary significantly between individuals. [Display omitted] • Thirteen distinct dietary patterns were assessed via farm-to-fork LCA. • Red meat exhibited high GHG emissions and resource use across dietary patterns. • Plant-based diets can reduce future dietary-related environmental impacts. • 'Vegetable-focused' diet can be adapted to specific cultural and climatic needs. • Data-driven diets in LCA studies may be more accurate than traditional diets. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Environmental Research is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.envres.2025.120974
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      – Code: eng
        Text: English
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        PageCount: 1
        StartPage: N.PAG
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      – SubjectFull: Dietary patterns
        Type: general
      – SubjectFull: Plant-based diet
        Type: general
      – SubjectFull: Veganism
        Type: general
      – SubjectFull: Reducing diets
        Type: general
      – SubjectFull: Product life cycle assessment
        Type: general
      – SubjectFull: Vegetarian foods
        Type: general
      – SubjectFull: Potatoes
        Type: general
    Titles:
      – TitleFull: Evaluating the GHG emissions, land use, and water use associated with contemporary dietary patterns in the Republic of Ireland.
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            NameFull: Burke, Daniel T.
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            NameFull: Hynds, Paul
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            NameFull: Priyadarshini, Anushree
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            – D: 01
              M: 04
              Text: Apr2025
              Type: published
              Y: 2025
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              Value: 270
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