Evidence mapPaperPMID 23404949Full record

Trial reportObesity (Silver Spring, Md.)2013

Endothelial function and weight loss: comparison of low-carbohydrate and low-fat diets.

Emile R Mohler, Alexandra A Sibley, Richard Stein, Victor Davila-Roman, Holly Wyatt, Karen Badellino, Daniel J Rader, Samuel Klein, Gary D Foster

Open access · bronzeAbstract readComparative StudyMulticenter StudyRandomized Controlled Trial
In one paragraph

Trial report in Obesity (Silver Spring, Md.), 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 1 pooled it
2.6field-weighted citation impact, top 10% of its field
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

18 citing papers in PubMed, 1 synthesis or guideline pooled it, 31 citations in OpenAlex.

  1. Pooled it
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  6. Review
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  17. Insulin status and vascular responses to weight loss in obesity.Journal of the American College of Cardiology · 2013
    Article
  18. 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

9 authors at 3 institutions in 1 country.

Emile R MohlerDepartment of Medicine, Cardiovascular Division, Section of Vascular Medicine, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania, USA. mohlere@uphs.upenn.edu
Alexandra A Sibley
Richard Stein
Victor Davila-Roman
Holly Wyatt
Karen Badellino
Daniel J Rader
Samuel Klein
Gary D Foster
University of Pennsylvania · USWashington University in St. Louis · USTemple University · US

Funding

PILOT STUDY--SUBSTRATE METABOLISM IN EXTREMELY LOW BIRTH WEIGHT INFANTSP30DK048520 · UNIVERSITY OF COLORADO DENVER · 1995 to 2025
$7.7M
Washington University Nutrition Obesity Research CenterP30DK056341 · WASHINGTON UNIVERSITY · 1999 to 2025
$5.7M
WU P&FP30DK020579 · NIDDK · WASHINGTON UNIVERSITY · 2022 to 2025
$5.6M
The Safety and Efficacy of Low and High Carbohydrate DieR01AT001103 · UNIVERSITY OF PENNSYLVANIA · 2002 to 2005
$4.0M
NCCIH NIH HHS AT1103NCCIH NIH HHS R01 AT001103NCRR NIH HHS UL1 RR024134NCRR NIH HHS UL1RR024134NHLBI NIH HHS K12 HL083772NHLBI NIH HHS K12 HL083772-01NIDDK NIH HHS DK56341NIDDK NIH HHS P30 DK020579NIDDK NIH HHS P30 DK048520NIDDK NIH HHS P30 DK056341
6 · The paper itself

Abstract

objectiveThe effect of weight loss on obesity-associated endothelial dysfunction is not clear because of conflicting data, demonstrating both improvement and no change in endothelial function after weight loss in obese subjects. A 2-year prospective study (n = 121) was conducted to examine: (1) the effect of obesity and weight loss (either a low-carbohydrate or and low-fat diet) on flow mediated vasodilatation (FMD), a measure of endothelial function. DESIGN AND

methodsParticipants reduced body weight by 7.1% ± 4.4%, 8.7% ± 6.8%, 7.1% ± 7.8%, and 4.1% ± 7.7% at 3, 6, 12, and 24 months, respectively with no significant differences between the low-fat and low-carbohydrate groups.

resultsEndothelial function was inversely correlated with waist circumference, triglyceride level, and directly correlated with leptin in obese persons prior to weight loss. These weight losses did not confer any improvements in FMD. There were no differences between the low-fat and low-carbohydrate diets in FMD at any time point. At 6 months (r = 0.26, P = 0.04) and 1 year (r =0.28, P = 0.03), there were positive correlations between change in FMD and change in leptin but not at 2 years.

conclusionThere was no significant improvement in endothelial function after 7.1% ± 7.8% weight loss at 1 year and 4.1% ± 7.7% at 2 years, achieved by either a low carbohydrate or a low fat diet.

Indexed as

Diet, Carbohydrate-RestrictedDiet, Fat-RestrictedWeight LossAdultBlood PressureBody Mass IndexBody WeightBrachial ArteryEndotheliumFemaleHumansImage Processing, Computer-AssistedLeptinMaleMiddle AgedObesityLeptinTriglycerides

Identifiers

PMID23404949
PMCPMC3630284
OpenAlexW2045806477

What Socratic holds

Textmetadata
LicenceTDM
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 Socratic graph.