Evidence map›Paper›PMID 22657586›Full record

Trial reportNutrition journal2012

Micronutrient deficiency in obese subjects undergoing low calorie diet.

Antje Damms-Machado, Gesine Weser, Stephan C Bischoff

Registry-linked trialOpen access · goldAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Nutrition journal, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01344525 (Pilot Project on Interdisciplinary Therapy of Obesity and Its Consequences on Body Weight, Quality of Life and Gastrointestinal Parameters), which is not on this map. Cited by 71 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
71citing papers in PubMed, 2 pooled it
6.7field-weighted citation impact, top 3% 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.

NCT01344525 narecruitingnot on this map

Pilot Project on Interdisciplinary Therapy of Obesity and Its Consequences on Body Weight, Quality of Life and Gastrointestinal Parameters

TypeinterventionalSponsorUniversity of HohenheimRan2009 to 2029Enrolled480ConditionsObesity, Weight LossArmsLaparoscopic gastric sleeve, Gastric Banding, Multidisciplinary lifstyle intervention, Roux-en-Y Bypass
3 · Its place in the literature

Who cites it

71 citing papers in PubMed, 2 syntheses or guidelines pooled it, 150 citations in OpenAlex.

  1. Pooled it
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  8. International Society of Sports Nutrition position stand: diets for body weight reduction.Journal of the International Society of Sports Nutrition · 2026
    Review
  9. Nutrition Strategies for Next-Generation Incretin Therapies: A Systematic Scoping Review of the Current Evidence.Obesity reviews : an official journal of the International Association for the Study of Obesity · 2026
    Article
  10. Review
  11. Review
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  16. Injectable drugs for weight management.Australian prescriber · 2025
    Review
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  20. Article

11 more citing papers are in PubMed but not listed here.

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 at 1 institution in 1 country.

Antje Damms-MachadoDepartment of Nutritional Medicine, University of Hohenheim, Stuttgart, Germany.
Gesine Weser
Stephan C Bischoff
University of Hohenheim · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe prevalence of micronutrient deficiencies is higher in obese individuals compared to normal-weight people, probably because of inadequate eating habits but also due to increased demands among overweight persons, which are underestimated by dietary reference intakes (DRI) intended for the general population. We therefore evaluated the dietary micronutrient intake in obese individuals compared to a reference population and DRI recommendations. Furthermore, we determined the micronutrient status in obese subjects undergoing a standardized DRI-covering low-calorie formula diet to analyze if the DRI meet the micronutrient requirements of obese individuals.

methodsIn 104 subjects baseline micronutrient intake was determined by dietary record collection. A randomly assigned subgroup of subjects (n = 32) underwent a standardized DRI-covering low-calorie formula diet over a period of three months. Pre- and post-interventional intracellular micronutrient status in buccal mucosa cells (BMC) was analyzed, as well as additional micronutrient serum concentrations in 14 of the subjects.

resultsPrior to dietetic intervention, nutrition was calorie-rich and micronutrient-poor. Baseline deficiencies in serum concentrations were observed for 25-hydroxyvitamin-D, vitamin C, selenium, iron, as well as ß-carotene, vitamin C, and lycopene in BMC. After a three-month period of formula diet even more subjects had reduced micronutrient levels of vitamin C (serum, BMC), zinc, and lycopene. There was a significant negative correlation between lipophilic serum vitamin concentrations and body fat, as well as between iron and C-reactive protein.

conclusionsThe present pilot study shows that micronutrient deficiency occurring in obese individuals is not corrected by protein-rich formula diet containing vitamins and minerals according to DRI. In contrast, micronutrient levels remain low or become even lower, which might be explained by insufficient intake, increased demand and unbalanced dispersal of lipophilic compounds in the body.

trial registrationThe study was registered at ClinicalTrials.gov (NCT01344525). The study protocol comprises only a part of the approved trial protocol.

Indexed as

Caloric RestrictionFeeding BehaviorAdultbeta CaroteneCarotenoidsC-Reactive ProteinDiet RecordsEnergy IntakeFemaleHumansLycopeneMaleMalnutritionMicronutrientsMiddle AgedNutritional Statusbeta CaroteneCarotenoidsC-Reactive ProteinLycopeneMicronutrients

Identifiers

PMID22657586
PMCPMC3404899
OpenAlexW2155709875

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.