Evidence map›Paper›PMID 31587681›Full record

Trial reportPublic health nutrition2019

Confusion and nutritional backlash from news media exposure to contradictory information about carbohydrates and dietary fats.

Danielle Clark, Rebekah H Nagler, Jeff Niederdeppe

Abstract readRandomized Controlled Trial
In one paragraph

Trial report in Public health nutrition, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

21 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Trial
  3. Vulnerability to the Effects of Conflicting Health Information: Testing the Moderating Roles of Trust in News Media and Research Literacy.Health education & behavior : the official publication of the Society for Public Health Education · 2023
    Trial
  4. Trial
  5. Article
  6. Article
  7. Consumer Perception of Plant-Based Cheese.Journal of food science · 2025
    Article
  8. The effects of social media criticism against public health institutions on trust, emotions, and social media engagement.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  9. Article
  10. Review
  11. Article
  12. Article
  13. #Fail: the quality and accuracy of nutrition-related information by influential Australian Instagram accounts.The international journal of behavioral nutrition and physical activity · 2024
    Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Review
  20. Article
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.

Danielle ClarkDepartment of Communication, Cornell University, 476 Mann Library Building, Ithaca, NY 14853, USA.
Rebekah H NaglerHubbard School of Journalism and Mass Communication, University of Minnesota, Minneapolis, MN, USA.
Jeff NiederdeppeDepartment of Communication, Cornell University, 476 Mann Library Building, Ithaca, NY 14853, USA.ORCID 0000-0001-7686-1526

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo test the effect of news media exposure to contradictory information about carbohydrates and dietary fats on levels of confusion, nutritional backlash and dietary intentions.

designWe conducted an online survey experiment between 11 and 28 February 2018, randomizing participants to one of six experimental conditions. Two 'contradictory information' conditions asked participants to read one news article on the risks of a low-carbohydrate diet and one article on the risks of a low-fat diet. Two 'convergent information' conditions asked participants to read two articles with similar information on the risks of one of these two diets. A fifth 'established health recommendations' control condition asked participants to read two articles on the harms of smoking and sun exposure. A sixth 'no information' condition served as a second control group. We used general linear models to test hypotheses on the effects of exposure on confusion, nutritional backlash and dietary intentions.

settingUSA.

participantsAdults (n 901) registered with Amazon's Mechanical Turk (M-Turk).

resultsExposure to contradictory information about carbohydrates and dietary fats increased confusion and nutritional backlash compared with exposure to established health recommendations for non-dietary behaviours and a no-exposure control. Exposure to contradictory information also increased confusion compared with exposure to consistent nutrition information regarding carbohydrates and dietary fats.

conclusionsContradictory nutrition information in the news media can negatively affect consumers' attitudes, beliefs and behavioural intentions. Dietary debates that play out in the media may adversely influence both short-term dietary decisions and future efforts to communicate about unrelated nutrition issues.

Indexed as

Dietary CarbohydratesDietary FatsHealth CommunicationHealth Knowledge, Attitudes, PracticeMass MediaAdolescentAdultAgedConfusionDietFemaleHumansMaleMiddle AgedMotivationYoung AdultDietary CarbohydratesDietary FatsCarbohydratesConfusionFatsHealth communicationNews media

Identifiers

PMID31587681
PMCPMC10260685

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.