Cited by 993Nutritional Studies and DietAgriculture Sustainability and Environmental ImpactCardiovascular Health and Risk Factors

The DOI matches its Crossref record; 36 of the 36 references it cites were found in a registry or an index; none of the 58 sources its claims cite is checked for support yet.

Healthful and Unhealthful Plant-Based Diets and the Risk of Coronary Heart Disease in U.S. Adults

Open access

Abstract

Background Plant-based diets are recommended for coronary heart disease (CHD) prevention. However, not all plant foods are necessarily beneficial for health. Objectives To examine associations between plant-based diet indices and CHD incidence. Methods We included 73,710 women in Nurses’ Health Study (NHS) (1984–2012), 92,329 women in NHS2 (1991–2013), and 43,259 men in Health Professionals Follow-up Study (1986–2012), free of chronic diseases at baseline. We created an overall plant-based diet index (PDI) from repeated semi quantitative food-frequency questionnaire data, by assigning positive scores to plant foods and reverse scores to animal foods. We also created a healthful PDI (hPDI) where healthy plant foods (whole grains, fruits/vegetables, nuts/legumes, oils, tea/coffee) received positive scores, while less-healthy plant foods (juices/sweetened beverages, refined grains, potatoes/fries, sweets) and animal foods received reverse scores. To create an unhealthful PDI (uPDI), we gave positive scores to less-healthy plant foods and reverse scores to animal and healthy plant foods. Results Over 4,833,042 person-years of follow-up, we documented 8,631 incident CHD cases. In pooled multivariable analysis, higher adherence to PDI was independently inversely associated with CHD (HR comparing extreme deciles: 0.92, 95% CI: 0.83–1.01; p trend=0.003). This inverse association was stronger for hDPI (HR: 0.75, 95% CI: 0.68–0.83; p trend<0.001). Conversely, uPDI was positively associated with CHD (HR: 1.32, 95% CI: 1.20–1.46; p trend<0.001). Conclusions Higher intake of a plant-based diet index rich in healthier plant foods is associated with substantially lower CHD risk, while a plant-based diet index that emphasizes less-healthy plant foods is associated with higher CHD risk.

Overview

AI snapshot

Written from the paper’s full text.

TL;DR

In three large US prospective cohorts, greater adherence to an overall plant-based diet index was modestly associated with lower coronary heart disease (CHD) risk, but the association depended on plant food quality. A healthful plant-based diet index was associated with substantially lower CHD risk, whereas an unhealthful plant-based diet index was associated with higher CHD risk.

Key findings

  • Over 4,833,042 person-years of follow-up, 8,631 incident CHD cases occurred.
  • Higher overall plant-based diet index (PDI) adherence was modestly inversely associated with CHD: HR comparing extreme deciles 0.92 (95% CI 0.83–1.01); p trend=0.003.
  • Higher healthful plant-based diet index (hPDI) adherence was more strongly inversely associated with CHD: HR comparing extreme deciles 0.75 (95% CI 0.68–0.83); p trend<0.001.
  • Higher unhealthful plant-based diet index (uPDI) adherence was positively associated with CHD: HR comparing extreme deciles 1.32 (95% CI 1.20–1.46); p trend<0.001.

Methods

  • Prospective cohort analysis including 73,710 women in Nurses’ Health Study, 92,320 women in NHS2, and 43,259 men in Health Professionals Follow-up Study, free of chronic diseases at baseline.
  • Diet was assessed with repeated semi-quantitative food-frequency questionnaires; three indices were created by assigning positive or reverse scores to 18 food groups: PDI, hPDI, and uPDI.
  • Cox proportional-hazards regression estimated hazard ratios for CHD by deciles of each index, with cumulative averaging of diet over follow-up; cohort-specific results were pooled using a fixed effects model.

Limitations

  • The paper states that measurement error in diet assessment is likely, although cumulative averaging reduces random errors; residual and unmeasured confounding are possible in this observational study, and modest effect sizes such as those for PDI should be interpreted with caution.
  • Evident from the text: the study is observational, so causality cannot be established; diet and covariates were largely self-reported.
  • Evident from the text: participants were US health professionals, which may limit generalizability to other populations.

Model-written summary. Check it against the paper before relying on it.

Integrity signals

Registry

Crossref · 10.1016/j.jacc.2017.05.047

Cites

36 of 36 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Verification

Claims the paper makes

0 of 58 cited sources checked · 0 supported · 0 flagged

Show all 31 claims

  • It may state two separate claims as one. 14
  • The quote only partly states this claim. 1
  • Probably not a substantial claim. 14
25 of 25
  • The paper relies on this without support.

    Recommendations based on incremental dietary changes are easier to adopt.

    “As recommendations based on incremental dietary changes are easier to adopt, it is important to understand how gradual reductions in animal food intake with concomitant increases in consumption of plant foods affect cardiovascular health.”
  • The paper relies on this without support.

    CHD has a long etiologic period.

    “However, these studies have examined plant-based diets at a single time point, making it difficult to fully capture the association of a time-varying exposure such as diet on the development of CHD which has a long etiologic period.”
2 of 2

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

Each contradiction between two passages listed here was confirmed by an independent check.

  • NHS2 sample size differs between abstract and Methods

    Minor

    The abstract reports 92,329 NHS2 participants, while the Methods report 92,320.

  • Animal-food intake is assigned to opposite PDI deciles

    Minor

    The Results assign 5-6 daily servings of animal foods to the highest decile and 3-4 to the lowest. The Discussion instead assigns 5-6 servings to the lowest PDI decile and 3 to the highest.

2 of 2

Citations

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Metadata

Authors
Satija, A., Bhupathiraju, S. N., Spiegelman, D., Chiuve, S. E., Manson, J. E., Willett, W., Rexrode, K. M., Rimm, E. B., & Hu, F. B.
Affiliations
  • Harvard University (US)
  • Brigham and Women's Hospital (US)
Corresponding author
Satija, Ambika
Venue
Journal of the American College of Cardiology
Publisher
Elsevier BV
Published
2017-07
Volume
70
Issue
4
Pages
411-422
ISSN
0735-1097 (ISSN-L)
OpenAlex
W2735659721
Cited by
991
References
36
Citations by year
2026: 107 · 2025: 146 · 2024: 157 · 2023: 133 · 2022: 119 · 2021: 118 · 2020: 110 · 2019: 57 · 2018: 38 · 2017: 6
FWCI
54.18
Type
journal article
Language
en
Open access
Locations
  • Journal of the American College of Cardiology (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • U.S. Department of Agriculture
  • National Institutes of Health (UM1-CA-176726, UM1-CA167552, CA176726, CA-167552, CA186107)
  • National Heart, Lung, and Blood Institute (R01HL060712, R01HL035464, R01HL034594)
  • National Cancer Institute (UM1CA176726, UM1CA186107, UM1CA167552)
Topics
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Nutritional Studies and Diet
  • Physical Sciences › Environmental Science › Ecology › Agriculture Sustainability and Environmental Impact
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Health and Risk Factors
Keywords
plant-based diet, coronary artery disease, whole grains, fruits and vegetables, legumes and nuts, refined grains, sweetened beverages, animal food, Nurses' Health Study, Health Professionals Follow-up Study, dietary adherence, cardiovascular disease prevention, dietary quality assessment, food frequency questionnaire
MeSH terms
Adult, Aged, Coronary Disease, Female, Follow-Up Studies, Forecasting, Humans, Male, Middle Aged, Prospective Studies, Risk Factors, United States, Diet, Vegetarian, Incidence

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