The 2025–2030 Dietary Guidelines for Americans are associated with higher land, water and nitrogen use, and greenhouse gas emissions
2025～2030年のアメリカ人のための食事ガイドラインは、土地、水、窒素使用、および温室効果ガス排出量の増加と関連している (AI 翻訳)
Alon Shepon, Tamar Makov, David L. Katz, Gidon Eshel
🤖 gxceed AI 要約
日本語
本論文は、2025～2030年のアメリカの食事ガイドラインの環境影響を評価した。ガイドラインは超加工食品を避け、動物性たんぱく質の増加を推奨するが、これにより温室効果ガス排出、土地利用、窒素肥料使用が32%も増加する可能性がある。植物由来の食品を優先することで環境負荷は低減できる。
English
This study evaluates the environmental impact of the 2025-2030 U.S. Dietary Guidelines. The guidelines recommend avoiding ultraprocessed foods and increasing animal-based protein, which could increase GHG emissions, land use, and nitrogen fertilizer use by up to 32% compared to the current average American diet. Shifting to plant-based proteins yields better environmental outcomes.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
この研究は、米国の食事ガイドラインが環境に与える影響を定量的に示しており、日本の食料政策や環境政策にも示唆を与える。日本でも「食料・農業・農村基本計画」などで環境負荷低減が議論されており、類似の分析が有用である。
In the global GX context
This paper provides quantitative evidence linking dietary guidelines to environmental impacts, relevant for global climate mitigation discussions. It highlights the trade-offs between eliminating ultraprocessed foods and increasing animal protein, which is important for countries updating national dietary guidelines.
👥 読者別の含意
🔬研究者:This paper offers a method for assessing environmental footprints of dietary guidelines, useful for researchers in sustainable food systems.
🏢実務担当者:Sustainability teams in food companies can use these findings to advocate for plant-based options in institutional procurement.
🏛政策担当者:Policymakers should consider the environmental co-benefits of promoting plant-based proteins in national dietary guidelines.
📄 Abstract（原文）
Dietary guidelines form the foundation of federal food policy, informing programs such as the Supplemental Nutrition Assistance Program (SNAP), government food procurement, school meals, and military and hospital food services. The most recent guidelines, released in early 2026, advise avoiding “hyperprocessed” (generally known as ultraprocessed foods, UPFs), while also recommending higher overall protein intake chiefly from animal sources. Here, we quantified the greenhouse gas (GHG) emissions, freshwater use, land use, and nitrogen fertilizer use of adherence to these new guidelines in comparison to the current Mean American Diet (MAD). We constructed isocaloric diets with varying degrees of added protein intake and protein sources that are similar to current dietary patterns, but with no UPFs as recommended. We find that although eliminating ultraprocessed foods from the MAD could yield substantial environmental benefits—given their large share of total intake and animal-based makeup—the recommended increase in animal-based proteins, will more than offset this environmental dividend in GHG, land use, and nitrogen fertilizer use by as much as 32%, but not in water use (i.e., water use is lower by 7 to 19% than the MAD). Across all environmental metrics measured, favoring plants- over animal-based foods leads to better environmental outcomes. Overall, adherence to the 2025–2030 Dietary Guidelines for Americans would confer net environmental harm across most key metrics relative to the prevailing U.S. diet.
🔗 Provenance — このレコードを発見したソース
- crossref https://doi.org/10.1073/pnas.2604814123first seen 2026-06-02 05:24:31 · last seen 2026-06-15 05:40:49
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