Evidence map›Paper›PMID 26139105›Full record

Trial reportObesity facts2015

Diet-Induced Weight Loss Alters Functional Brain Responses during an Episodic Memory Task.

Carl-Johan Boraxbekk, Andreas Stomby, Mats Ryberg, Bernt Lindahl, Christel Larsson, Lars Nyberg, Tommy Olsson

Open access · goldAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Obesity facts, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 6 pooled it
2.8field-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

30 citing papers in PubMed, 6 syntheses or guidelines pooled it, 55 citations in OpenAlex.

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  6. Obesity and episodic memory function.The journal of physiological sciences : JPS · 2018
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  14. Effect of the Minor C Allele ofNeuropsychiatric disease and treatment · 2022
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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

7 authors at 2 institutions in 1 country.

Carl-Johan BoraxbekkCenter for Demographic and Aging Research, Umex00E5; University, Umex00E5;, Sweden.
Andreas Stomby
Mats Ryberg
Bernt Lindahl
Christel Larsson
Lars Nyberg
Tommy Olsson
Umeå University · SEUniversity of Gothenburg · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveIt has been suggested that overweight is negatively associated with cognitive functions. The aim of this study was to investigate whether a reduction in body weight by dietary interventions could improve episodic memory performance and alter associated functional brain responses in overweight and obese women.

methods20 overweight postmenopausal women were randomized to either a modified paleolithic diet or a standard diet adhering to the Nordic Nutrition Recommendations for 6 months. We used functional magnetic resonance imaging to examine brain function during an episodic memory task as well as anthropometric and biochemical data before and after the interventions.

resultsEpisodic memory performance improved significantly (p = 0.010) after the dietary interventions. Concomitantly, brain activity increased in the anterior part of the right hippocampus during memory encoding, without differences between diets. This was associated with decreased levels of plasma free fatty acids (FFA). Brain activity increased in pre-frontal cortex and superior/middle temporal gyri. The magnitude of increase correlated with waist circumference reduction. During episodic retrieval, brain activity decreased in inferior and middle frontal gyri, and increased in middle/superior temporal gyri.

conclusionsDiet-induced weight loss, associated with decreased levels of plasma FFA, improves episodic memory linked to increased hippocampal activity.

Indexed as

Brain MappingDiet, PaleolithicDiet, ReducingMemory, EpisodicAgedBrainFemaleFrontal LobeHippocampusHumansMagnetic Resonance ImagingMiddle AgedObesityOverweightTemporal LobeWeight Loss

Identifiers

PMID26139105
PMCPMC5644894
OpenAlexW1557784881

What OpenQuestion holds

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LicenceCC BY-NC
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.