Evidence map›Paper›PMID 34415999›Full record

Observational studyThe Journal of clinical endocrinology and metabolism2022

Change in Visceral Fat and Total Body Fat and the Effect on Cardiometabolic Risk Factors During Transgender Hormone Therapy.

Maartje Klaver, Daan van Velzen, Christel de Blok, Nienke Nota, Chantal Wiepjes, Justine Defreyne, Thomas Schreiner, Alessandra Fisher, Jos Twisk, Jaap Seidell and 3 more

Open access · hybridAbstract readMulticenter StudyObservational Study
In one paragraph

Observational study in The Journal of clinical endocrinology and metabolism, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed, 2 pooled it
6.0field-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.

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

36 citing papers in PubMed, 2 syntheses or guidelines pooled it, 60 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Efficacy and Safety of TESTOPEAKAmerican journal of men's health
    Trial
  5. Cardiometabolic diseases in transgender populations.Cardiovascular diabetology. Endocrinology reports · 2026
    Review
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  8. Observational
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  10. Article
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  15. Observational
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

13 authors at 6 institutions in 4 countries.

Maartje KlaverDepartment of Endocrinology and Center of Expertise on Gender Dysphoria, Amsterdam University Medical Center, Amsterdam, the Netherlands.
Daan van VelzenDepartment of Endocrinology and Center of Expertise on Gender Dysphoria, Amsterdam University Medical Center, Amsterdam, the Netherlands.ORCID 0000-0003-1820-3140
Christel de BlokDepartment of Endocrinology and Center of Expertise on Gender Dysphoria, Amsterdam University Medical Center, Amsterdam, the Netherlands.ORCID 0000-0002-9805-8897
Nienke NotaDepartment of Endocrinology and Center of Expertise on Gender Dysphoria, Amsterdam University Medical Center, Amsterdam, the Netherlands.ORCID 0000-0003-1394-4441
Chantal WiepjesDepartment of Endocrinology and Center of Expertise on Gender Dysphoria, Amsterdam University Medical Center, Amsterdam, the Netherlands.ORCID 0000-0002-8280-0065
Justine DefreyneDepartment of Endocrinology, Ghent University Hospital, Ghent, Belgium.ORCID 0000-0002-6570-2340
Thomas SchreinerDepartment of Endocrinology, Oslo University Hospital, Oslo, Norway.ORCID 0000-0001-7069-0981
Alessandra FisherAndrology, Women's Endocrinology and Gender Incongruence Unit, University of Florence, Florence, Italy.ORCID 0000-0003-3446-5132
Jos TwiskDepartment of Clinical Epidemiology, Amsterdam University Medical Center, Amsterdam, the Netherlands.
Jaap SeidellDepartment of Health Sciences, Faculty of Science, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands.
Guy T'SjoenDepartment of Endocrinology, Ghent University Hospital, Ghent, Belgium.ORCID 0000-0002-9250-4403
Martin den HeijerDepartment of Endocrinology and Center of Expertise on Gender Dysphoria, Amsterdam University Medical Center, Amsterdam, the Netherlands.ORCID 0000-0003-3620-5617
Renée de MutsertDepartment of Clinical Epidemiology, Leiden University Medical Center, Leiden, the Netherlands.
Amsterdam University Medical Centers · NLGhent University Hospital · BELeiden University Medical Center · NLOslo University Hospital · NOUniversity of Florence · ITVrije Universiteit Amsterdam · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionExcess visceral fat increases the risk of type 2 diabetes and cardiovascular disease and is influenced by sex hormones. Our aim was to investigate changes in visceral fat and the ratio of visceral fat to total body fat (VAT/TBF) and their associations with changes in lipids and insulin resistance after 1 year of hormone therapy in trans persons.

methodsIn 179 trans women and 162 trans men, changes in total body and visceral fat estimated with dual-energy X-ray absorptiometry before and after 1 year of hormone therapy were related to lipids and insulin resistance [homeostatic model assessment of insulin resistance (HOMA-IR)] with linear regression analysis.

resultsIn trans women, total body fat increased by 4.0 kg (95% CI 3.4, 4.7), while the amount of visceral fat did not change (-2 grams; 95% CI -15, 11), albeit with a large range from -318 to 281, resulting in a decrease in the VAT/TBF ratio of 17% (95% CI 15, 19). In trans men, total body fat decreased with 2.8 kg (95% CI 2.2, 3.5), while the amount of visceral fat did not change (3 g; 95% CI -10, 16; range -372, 311), increasing the VAT/TBF ratio by 14% (95% CI 10, 17). In both groups, VAT/TBF was not associated with changes in blood lipids or HOMA-IR.

conclusionsHormone therapy in trans women and trans men resulted in changes in VAT/TBF, mainly due to changes in total body fat and were unrelated to changes in cardiometabolic risk factors, which suggests that any unfavorable cardiometabolic effects of hormone therapy are not mediated by changes in visceral fat or VAT/TBF.

Indexed as

AdiposityBody Mass IndexAdultCardiometabolic Risk FactorsCardiovascular DiseasesFemaleFollow-Up StudiesHormone Replacement TherapyHumansInsulin ResistanceIntra-Abdominal FatMaleObesityPrognosisProspective StudiesRisk Factorshormone therapyinsulin resistancelipidstransgendervisceral fat

Identifiers

PMID34415999
PMCPMC8684493
OpenAlexW3195989163

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.