Carbon Evidence

Evidence map

Food footprint: what the evidence base looks like

6 publications, 2 of them trials and 0 syntheses. This page describes the shape of that literature rather than summarising its conclusions.

Updated 3 min read 6 citations

What the evidence on food footprint is made of Of 6 publications on this topic, the breakdown by study type: 2 randomised trial, 3 review, 1 other. 231randomised trial (2)review (3)other (1)
6 publications, by study type. Volume is not strength — the same count can be a settled question or a pile of commentary, and which one it is depends almost entirely on this breakdown. Harvested from PubMed and Crossref; publication type as recorded by the source.

What this literature is made of

This is a thin evidence base. It is included because the question gets asked, not because the literature has settled it — and a page that pretended otherwise would be worse than one that says so.

The distinction that matters most is between synthesis and primary research. A meta-analysis pools trials and is the closest thing to a settled answer a field produces. A narrative review is one group's reading of the same material and can be selective without being dishonest. Counting them together, which most citation counts do, obscures exactly the thing you want to know.

When the food footprint literature was published Publication years for the 6 papers on this topic, grouped into bands from before 2015 through to 2023 onwards. 2023 onwards3 papers2020-20222 papers2015-20191 papers
Still active. The most recent paper here is from 2025, so this is a field where an answer written today may not hold for long. Publication years as recorded by PubMed and Crossref.

How this page is built

Everything above is computed from the citations this site harvested from PubMed and Crossref, not written by hand. When the weekly harvest finds a new paper on this topic, these counts change and the characterisation changes with them. That is the point: a hand-written claim about how strong an evidence base is starts decaying the day it is written.

Publication type is taken as the source records it. That is imperfect — journals label inconsistently, and a paper indexed as a "review" may be a systematic one — so treat the bands as approximate. They are accurate enough to distinguish a trial literature from a commentary literature, which is the distinction that matters.

The strongest work on this topic

Ordered by study design first, then recency. The full set is listed in the references below.

  1. Metabolic Dysfunction-Associated Steatotic Liver Disease Is Linked to Environmental Sustainability: The Role of the Mediterranean Diet — García S, Bouzas C, Ródenas-Munar M et al., 2025, randomised controlled trial
  2. Traditional Atlantic Diet and Its Effect on Health and the Environment: A Secondary Analysis of the GALIAT Cluster Randomized Clinical Trial — Cambeses-Franco C, Gude F, Benítez-Estévez AJ et al., 2024, randomised controlled trial
  3. Water-Food-Carbon Nexus Related to the Producer-Consumer Link: A Review — Wang J, Sun S, Yin Y et al., 2022, review
  4. Sustainability and Pet Food: Is There a Role for Veterinarians? — Acuff HL, Dainton AN, Dhakal J et al., 2021, review
  5. Carbon footprint and nutritional quality of different human dietary choices — González-García S, Esteve-Llorens X, Moreira MT et al., 2018, review
  6. Carbon footprint and embodied nutrition evaluation of 388 recipes — Long Y, Huang L, Fujie R et al., 2023, journal article
How much research is there on food footprint?
6 publications are indexed here, of which 2 are trials and 0 are syntheses.
Does more research mean a stronger conclusion?
No. Composition matters more than volume — five randomised trials support a claim far better than fifty commentaries, and citation counts do not distinguish between them.
How current is this?
The most recent paper indexed here is from 2025. The set is refreshed weekly from PubMed and Crossref.
Why does this page not tell me the answer?
Because summarising a literature into a conclusion requires reading it, and doing that automatically is how confident nonsense gets published. This page tells you how much weight a conclusion could bear; the articles on this site do the interpreting.

References

Every citation below links to the original peer-reviewed record on PubMed or via DOI. Nothing here is a substitute for medical advice.

  1. Metabolic Dysfunction-Associated Steatotic Liver Disease Is Linked to Environmental Sustainability: The Role of the Mediterranean Diet García S, Bouzas C, Ródenas-Munar M, et al. · Nutrients · 2025 · Randomised controlled trial DOIPubMed 41156459Full text
  2. Traditional Atlantic Diet and Its Effect on Health and the Environment: A Secondary Analysis of the GALIAT Cluster Randomized Clinical Trial Cambeses-Franco C, Gude F, Benítez-Estévez AJ, et al. · JAMA network open · 2024 · Randomised controlled trial DOIPubMed 38324314Full text
  3. Water-Food-Carbon Nexus Related to the Producer-Consumer Link: A Review Wang J, Sun S, Yin Y, et al. · Advances in nutrition (Bethesda, Md.) · 2022 · Review DOIPubMed 35254401Full text
  4. Sustainability and Pet Food: Is There a Role for Veterinarians? Acuff HL, Dainton AN, Dhakal J, et al. · The Veterinary clinics of North America. Small animal practice · 2021 · Review DOIPubMed 33773646
  5. Carbon footprint and nutritional quality of different human dietary choices González-García S, Esteve-Llorens X, Moreira MT, et al. · The Science of the total environment · 2018 · Review DOIPubMed 29981520
  6. Carbon footprint and embodied nutrition evaluation of 388 recipes Long Y, Huang L, Fujie R, et al. · Scientific data · 2023 · Journal article DOIPubMed 37949916Full text