Evidence map›Paper›PMID 36868999›Full record

ArticleThe American journal of clinical nutrition2023

Popular diets as selected by adults in the United States show wide variation in carbon footprints and diet quality.

Keelia O'Malley, Amelia Willits-Smith, Donald Rose

Abstract read
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Article in The American journal of clinical nutrition, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
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1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

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3 · Its place in the literature

Who cites it

26 citing papers in PubMed.

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  11. Relationship Between Brazilian Dietary Patterns and the Global Syndemic: Data from the CUME Study.International journal of environmental research and public health · 2025
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  20. Body composition and COFrontiers in public health · 2024
    Observational
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors.

Keelia O'MalleyTulane Nutrition, School of Public Health and Tropical Medicine, Tulane University, New Orleans, LA, USA.
Amelia Willits-SmithTulane Nutrition, School of Public Health and Tropical Medicine, Tulane University, New Orleans, LA, USA.
Donald RoseTulane Nutrition, School of Public Health and Tropical Medicine, Tulane University, New Orleans, LA, USA. Electronic address: diego@tulane.edu.

Funding

Wellcome Trust 106854/Z/15/Z
6 · The paper itself

Abstract

backgroundCarbon footprints of vegetarian, pescatarian, and other popular diets have been studied previously, but mostly as idealized versions modeled to meet dietary recommendations. Less is known about the footprints of popular diets as they are consumed by US adults, and thus the potential trade-offs with diet quality for free-living individuals.

objectivesThis study estimated the carbon footprint and diet quality of popular diets as selected by a nationally representative sample of US consumers, including the recently trending keto- and paleo-style diets.

methodsThe 2005-2010 NHANES 24-h recall data were used to categorize individual adult diets (n = 16,412) into 6 types: vegan, vegetarian, pescatarian, paleo, keto, and all other diets, referred to here as omnivore diets. Average daily greenhouse gas emissions in kilograms of carbon dioxide equivalents per 1000 kcal (kg CO

resultsThe average carbon footprints of vegan (0.69 ± 0.05 kg CO

conclusionsOur results highlight the nuances when evaluating the nutritional quality of diets and their carbon footprints. On average, pescatarian diets may be the healthiest, but plant-based diets have lower carbon footprints than other popular diets, including keto- and paleo-style diets.

Indexed as

Carbon FootprintDietAdultDiet, HealthyDiet, VegetarianHumansNutrition SurveysPopular CultureUnited States24-h recallcarbon footprintdataFIELDdataFRIENDSHealthy Eating Indexketo dietNHANESpaleo diet

Identifiers

PMID36868999
PMCPMC10131583

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.