Evidence map›Paper›PMID 26053924›Full record

ArticleObesity (Silver Spring, Md.)2015

Changes in testosterone related to body composition in late midlife: Findings from the 1946 British birth cohort study.

David Bann, Frederick C W Wu, Brian Keevil, Hany Lashen, Judith Adams, Rebecca Hardy, Graciela Muniz, Diana Kuh, Yoav Ben-Shlomo, Ken K Ong

Abstract read
In one paragraph

Article in Obesity (Silver Spring, Md.), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 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.

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

13 citing papers in PubMed, 1 synthesis or guideline pooled it.

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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

10 authors.

David BannMRC Unit for Lifelong Health and Ageing at UCL, London, UK.
Frederick C W WuAndrology Research Unit, School of Biomedicine, University of Manchester, Manchester, UK.
Brian KeevilAndrology Research Unit, School of Biomedicine, University of Manchester, Manchester, UK.
Hany LashenDepartment of Human Metabolism, The University of Sheffield, Sheffield, UK.
Judith AdamsDepartment of Radiology, Central Manchester University Hospital NHS Foundation Trust, Manchester Academic Health Science Center, Manchester, UK.
Rebecca HardyMRC Unit for Lifelong Health and Ageing at UCL, London, UK.
Graciela MunizMRC Unit for Lifelong Health and Ageing at UCL, London, UK.
Diana KuhMRC Unit for Lifelong Health and Ageing at UCL, London, UK.
Yoav Ben-ShlomoSchool of Social and Community Medicine, Bristol University, Bristol, UK.
Ken K OngMRC Epidemiology Unit, University of Cambridge, Cambridge, UK.

Funding

Medical Research Council MC_U106179472Medical Research Council MC_UU_12015/2Medical Research Council MC_UU_12019/4
6 · The paper itself

Abstract

objectiveRandomized trials in men with testosterone deficiency have provided evidence of short-term effects of testosterone therapy on muscle and fat mass but it is unclear whether this persists over a longer period or how testosterone affects women. We examined whether the midlife decline in testosterone relates to fat and lean mass in both sexes.

methodsData were collected from 440 men and 560 women participating in the 1946 British birth cohort study with testosterone measured at 53 and/or 60-64 years. Fat and appendicular lean mass were measured at 60-64 years using dual-energy X-ray absorptiometry.

resultsMean free testosterone concentrations were lower at 60-64 than 53 years, by 26% in both sexes. At both ages testosterone was negatively associated with fat mass in men and positively associated in women. A larger decline in free testosterone was associated with higher fat mass in men but with lower fat mass among women. In contrast, declines in testosterone were not associated with lean mass in either sex.

conclusionsOur findings suggest sex-divergent relationships between testosterone and fat mass and their distribution but do not support the hypothesis that midlife declines in testosterone lead to lower lean mass.

Indexed as

Health StatusAbsorptiometry, PhotonAgingBody CompositionBone DensityCohort StudiesFemaleHumansMaleMiddle AgedRetrospective StudiesTestosteroneUnited KingdomTestosterone

Identifiers

PMID26053924
PMCPMC4744737

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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.