Evidence map›Paper›PMID 26638192›Full record

Trial reportObesity (Silver Spring, Md.)2016

Weight loss on low-fat vs. low-carbohydrate diets by insulin resistance status among overweight adults and adults with obesity: A randomized pilot trial.

Christopher D Gardner, Lisa C Offringa, Jennifer C Hartle, Kris Kapphahn, Rise Cherin

Registry-linked trialAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Obesity (Silver Spring, Md.), 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01661426 (Weight Loss Diet Study), which is not on this map. Cited by 22 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 4 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.

NCT01661426 nacompletednot on this map

Weight Loss Diet Study: Low Carbohydrate vs. Low Fat and Insulin Resistance Status

TypeinterventionalSponsorStanford UniversityRan2012 to 2013Enrolled61ConditionsObesity, Insulin ResistanceArmsLow-Carbohydrate Diet, Low-Fat Diet
3 · Its place in the literature

Who cites it

22 citing papers in PubMed, 4 syntheses or guidelines pooled it.

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  11. Should carbohydrate-modified diets be the first option for weight loss in people with impaired glucose metabolism? A scoping review.Obesity reviews : an official journal of the International Association for the Study of Obesity · 2024
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  20. Maintenance of Lost Weight and Long-Term Management of Obesity.The Medical clinics of North America · 2018
    Review
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

5 authors.

Christopher D GardnerStanford Prevention Research Center, Department of Medicine, Stanford University Medical School, Stanford, California, USA.
Lisa C OffringaStanford Prevention Research Center, Department of Medicine, Stanford University Medical School, Stanford, California, USA.
Jennifer C HartleStanford Prevention Research Center, Department of Medicine, Stanford University Medical School, Stanford, California, USA.
Kris KapphahnQuantitative Sciences Unit, Department of Medicine, Stanford University Medical School, Stanford, CA.
Rise CherinStanford Prevention Research Center, Department of Medicine, Stanford University Medical School, Stanford, California, USA.

Funding

XOLAIR IN SUBJECTS WITH MODERATE TO SEVERE ATOPIC DERMATITIS WITH FOOD ALLERGYM01RR000070 · NCRR · STANFORD UNIVERSITY · PI RASGON, NATALIE L · 1985 to 2008
$32.4M
WU P&FP30DK020579 · NIDDK · WASHINGTON UNIVERSITY · PI Jennifer Lynn Powers Carson · 2013 to 2026
$27.1M
CARDIOVASCULAR DISEASE PREVENTION TRAINING PROGRAMT32HL007034 · NHLBI · STANFORD UNIVERSITY · PI GARDNER, CHRISTOPHER D · 1985 to 2020
$8.7M
A Stanford - SJSU Postdoctoral Training Program to Enhance URM TeachingK12GM088033 · NIGMS · STANFORD UNIVERSITY · PI BOOTHROYD, JOHN C · 2010 to 2016
$4.1M
NCRR NIH HHS M01 RR000070NCRR NIH HHS M01-RR00070NHLBI NIH HHS T32 HL007034NIDDK NIH HHS P30 DK020579NIGMS NIH HHS 1 K12 GM088033NIGMS NIH HHS K12 GM088033
6 · The paper itself

Abstract

objectiveTo test for differential weight loss response to low-fat (LF) vs. low-carbohydrate (LC) diets by insulin resistance status with emphasis on overall quality of both diets.

methodsSixty-one adults, BMI 28-40 kg/m(2) , were randomized in a 2 × 2 design to LF or LC by insulin resistance status in this pilot study. Primary outcome was 6-month weight change. Participants were characterized as more insulin resistant (IR) or more insulin sensitive (IS) by median split of baseline insulin-area-under-the-curve from an oral glucose tolerance test. Intervention consisted of 14 one-hour class-based educational sessions.

resultsBaseline % carbohydrate:% fat:% protein was 44:38:18. At 6 months, the LF group reported 57:21:22 and the LC group reported 22:53:25 (IR and IS combined). Six-month weight loss (kg) was 7.4 ± 6.0 (LF-IR), 10.4 ± 7.8 (LF-IS), 9.6 ± 6.6 (LC-IR), and 8.6 ± 5.6 (LC-IS). No significant main effects were detected for weight loss by diet group or IR status; there was no significant diet × IR interaction. Significant differences in several secondary outcomes were observed.

conclusionsSubstantial weight loss was achieved overall, but a significant diet × IR status interaction was not observed. Opportunity to detect differential response may have been limited by the focus on high diet quality for both diet groups and sample size.

Indexed as

Diet, Carbohydrate-RestrictedDiet, Fat-RestrictedInsulin ResistanceWeight LossAdultFemaleGlucose Tolerance TestHumansInsulinMaleMiddle AgedObesityOverweightPilot ProjectsInsulin

Identifiers

PMID26638192
PMCPMC5898445

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Registered trials

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.