BMI in relation to sperm count: an updated systematic review and collaborative meta-analysis
Identifieur interne : 005457 ( Main/Exploration ); précédent : 005456; suivant : 005458BMI in relation to sperm count: an updated systematic review and collaborative meta-analysis
Auteurs : N. Sermondade [France] ; C. Faure [France] ; L. Fezeu [France] ; A. G. Shayeb [Royaume-Uni] ; J. P. Bonde [Danemark] ; T. K. Jensen [Danemark] ; M. Van Wely [Pays-Bas] ; J. Cao [République populaire de Chine] ; A. C. Martini [Argentine] ; M. Eskandar [Arabie saoudite] ; J. E. Chavarro [États-Unis] ; S. Koloszar [Hongrie] ; J. M. Twigt [Pays-Bas] ; C. H. Ramlau-Hansen [Danemark] ; E. Borges [Brésil] ; F. Lotti [Italie] ; R. P. M. Steegers-Theunissen [Pays-Bas] ; B. Zorn [Slovénie] ; A. J. Polotsky [États-Unis] ; S. La Vignera [Italie] ; B. Eskenazi [États-Unis] ; K. Tremellen ; E. V. Magnusdottir [Islande] ; I. Fejes [Hongrie] ; S. Hercberg [France] ; R. Lévy [France] ; S. Czernichow [France]Source :
- Human Reproduction Update [ 1355-4786 ] ; 2012.
Abstract
The global obesity epidemic has paralleled a decrease in semen quality. Yet, the association between obesity and sperm parameters remains controversial. The purpose of this report was to update the evidence on the association between BMI and sperm count through a systematic review with meta-analysis.
A systematic review of available literature (with no language restriction) was performed to investigate the impact of BMI on sperm count. Relevant studies published until June 2012 were identified from a Pubmed and EMBASE search. We also included unpublished data (
A total of 21 studies were included in the meta-analysis, resulting in a sample of 13 077 men from the general population and attending fertility clinics. Data were stratified according to the total sperm count as normozoospermia, oligozoospermia and azoospermia. Standardized weighted mean differences in sperm concentration did not differ significantly across BMI categories. There was a J-shaped relationship between BMI categories and risk of oligozoospermia or azoospermia. Compared with men of normal weight, the odds ratio (95% confidence interval) for oligozoospermia or azoospermia was 1.15 (0.93–1.43) for underweight, 1.11 (1.01–1.21) for overweight, 1.28 (1.06–1.55) for obese and 2.04 (1.59–2.62) for morbidly obese men.
Overweight and obesity were associated with an increased prevalence of azoospermia or oligozoospermia. The main limitation of this report is that studied populations varied, with men recruited from both the general population and infertile couples. Whether weight normalization could improve sperm parameters should be evaluated further.
Url:
DOI: 10.1093/humupd/dms050
PubMed: 23242914
PubMed Central: 3621293
Affiliations:
- Arabie saoudite, Argentine, Brésil, Danemark, France, Hongrie, Islande, Italie, Pays-Bas, Royaume-Uni, République populaire de Chine, Slovénie, États-Unis
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Bonde</name><affiliation wicri:level="1"><nlm:aff id="af4"><addr-line>Department of Occupational and Environmental Medicine</addr-line>,<institution>Bispebjerg Hospital of Copenhagen University</institution>,<addr-line>Bispebjerg Bakke, 2400 Copenhagen NV</addr-line>,<country>Denmark</country></nlm:aff><country xml:lang="fr">Danemark</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Jensen, T K" sort="Jensen, T K" uniqKey="Jensen T" first="T. K." last="Jensen">T. K. Jensen</name><affiliation wicri:level="1"><nlm:aff id="af5"><institution>University Department of Growth and Reproduction</institution>,<addr-line>GR 5064, Rigshospitalet, Blegdamsveg 9, 2100 Copenhagen</addr-line>,<country>Denmark</country></nlm:aff><country xml:lang="fr">Danemark</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Van Wely, M" sort="Van Wely, M" uniqKey="Van Wely M" first="M." last="Van Wely">M. Van Wely</name><affiliation wicri:level="1"><nlm:aff id="af6"><addr-line>Centre for Reproductive Medicine, Department of Obstetrics and Gynaecology</addr-line>,<institution>Academic Medical Centre</institution>,<addr-line>Meibergdreef 9, H4-205, 1105 AZ Amsterdam</addr-line>,<country>The Netherlands</country></nlm:aff><country xml:lang="fr">Pays-Bas</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Cao, J" sort="Cao, J" uniqKey="Cao J" first="J." last="Cao">J. Cao</name><affiliation wicri:level="1"><nlm:aff id="af7"><addr-line>College of Preventive Medicine</addr-line>,<institution>Third Military Medical University</institution>,<addr-line>No. 30 Gaotanyan Road, Shapingba District, Chongqing 400038</addr-line>,<country>China</country></nlm:aff><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Martini, A C" sort="Martini, A C" uniqKey="Martini A" first="A. C." last="Martini">A. C. Martini</name><affiliation wicri:level="1"><nlm:aff id="af8"><institution>Instituto de Fisiologia, Facultad de Ciencias Medicas, Universidad Nacional de Cordoba</institution>,<addr-line>Santa Rosa 1085, X5000ESU Cordoba</addr-line>,<country>Argentina</country></nlm:aff><country xml:lang="fr">Argentine</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Eskandar, M" sort="Eskandar, M" uniqKey="Eskandar M" first="M." last="Eskandar">M. Eskandar</name><affiliation wicri:level="1"><nlm:aff id="af9"><addr-line>Department of Obstetrics and Gynaecology</addr-line>,<institution>College of Medicine, King Khalid University</institution>,<addr-line>PO Box 641, Abha</addr-line>,<country>Saudi Arabia</country></nlm:aff><country xml:lang="fr">Arabie saoudite</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Chavarro, J E" sort="Chavarro, J E" uniqKey="Chavarro J" first="J. E." last="Chavarro">J. E. Chavarro</name><affiliation wicri:level="1"><nlm:aff id="af10"><addr-line>Department of Nutrition and Epidemiology</addr-line>,<institution>Harvard School of Public Health</institution>,<addr-line>665 Huntington Ave, Boston, MA 02115</addr-line>,<country>USA</country></nlm:aff><country xml:lang="fr">États-Unis</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation><affiliation wicri:level="1"><nlm:aff id="af11"><addr-line>Channing Laboratory, Department of Medicine</addr-line>,<institution>Brigham and Women's Hospital and Harvard Medical School</institution>,<addr-line>Boston, MA 02115</addr-line>,<country>USA</country></nlm:aff><country xml:lang="fr">États-Unis</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Koloszar, S" sort="Koloszar, S" uniqKey="Koloszar S" first="S." last="Koloszar">S. Koloszar</name><affiliation wicri:level="1"><nlm:aff id="af12"><addr-line>Department of Obstetrics and Gynaecology</addr-line>,<institution>University of Szeged</institution>,<addr-line>6725 Szeged, Semmelweis u.1.</addr-line>,<country>Hungary</country></nlm:aff><country xml:lang="fr">Hongrie</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Twigt, J M" sort="Twigt, J M" uniqKey="Twigt J" first="J. M." last="Twigt">J. M. Twigt</name><affiliation wicri:level="1"><nlm:aff id="af13"><addr-line>Departments of Obstetrics and Gynaecology, Room Ee22.71a, Erasmus MC</addr-line>,<institution>University Medical Center</institution>,<addr-line>PO Box 2040, 3000 CA Rotterdam</addr-line>,<country>The Netherlands</country></nlm:aff><country xml:lang="fr">Pays-Bas</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Ramlau Hansen, C H" sort="Ramlau Hansen, C H" uniqKey="Ramlau Hansen C" first="C. H." last="Ramlau-Hansen">C. H. Ramlau-Hansen</name><affiliation wicri:level="1"><nlm:aff id="af14"><addr-line>Department of Public Health, Section of Epidemiology</addr-line>,<institution>Aarhus University</institution>,<addr-line>8000 Aarhus C</addr-line>,<country>Denmark</country></nlm:aff><country xml:lang="fr">Danemark</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Borges, E" sort="Borges, E" uniqKey="Borges E" first="E." last="Borges">E. Borges</name><affiliation wicri:level="1"><nlm:aff id="af15"><institution>Fertility-Assisted Fertilization Center</institution>,<addr-line>Av. Brig. Luis Antonio, 4545 Sao Paulo</addr-line>,<country>Brazil</country></nlm:aff><country xml:lang="fr">Brésil</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Lotti, F" sort="Lotti, F" uniqKey="Lotti F" first="F." last="Lotti">F. Lotti</name><affiliation wicri:level="1"><nlm:aff id="af16"><addr-line>Sexual Medicine and Andrology Unit, Department of Clinical Physiopathology</addr-line>,<institution>University of Florence</institution>,<addr-line>Viale Pieraccini 6, I-50139 Florence</addr-line>,<country>Italy</country></nlm:aff><country xml:lang="fr">Italie</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Steegers Theunissen, R P M" sort="Steegers Theunissen, R P M" uniqKey="Steegers Theunissen R" first="R. P. M." last="Steegers-Theunissen">R. P. M. Steegers-Theunissen</name><affiliation wicri:level="1"><nlm:aff id="af13"><addr-line>Departments of Obstetrics and Gynaecology, Room Ee22.71a, Erasmus MC</addr-line>,<institution>University Medical Center</institution>,<addr-line>PO Box 2040, 3000 CA Rotterdam</addr-line>,<country>The Netherlands</country></nlm:aff><country xml:lang="fr">Pays-Bas</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Zorn, B" sort="Zorn, B" uniqKey="Zorn B" first="B." last="Zorn">B. Zorn</name><affiliation wicri:level="1"><nlm:aff id="af17"><addr-line>Andrology Center, Department of Obstetrics and Gynecology</addr-line>,<institution>University Medical Center Ljubljana</institution>,<addr-line>Ljubljana</addr-line>,<country>Slovenia</country></nlm:aff><country xml:lang="fr">Slovénie</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Polotsky, A J" sort="Polotsky, A J" uniqKey="Polotsky A" first="A. J." last="Polotsky">A. J. Polotsky</name><affiliation wicri:level="1"><nlm:aff id="af18"><addr-line>Department of Obstetrics and Gynecology</addr-line>,<institution>University of Colorado Denver</institution>,<addr-line>12631 East 17th Avenue, Mail Stop B198-3, Academic Office 1, Room 4515, Aurora, CO 80045</addr-line>,<country>USA</country></nlm:aff><country xml:lang="fr">États-Unis</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="La Vignera, S" sort="La Vignera, S" uniqKey="La Vignera S" first="S." last="La Vignera">S. La Vignera</name><affiliation wicri:level="1"><nlm:aff id="af19"><institution>University of Catania, Section of Andrology, Endocrinology and Internal Medicine, Policlinico ‘G. Rodolico’</institution>,<addr-line>Via S. Sofia 78, 95123 Catania</addr-line>,<country>Italy</country></nlm:aff><country xml:lang="fr">Italie</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Eskenazi, B" sort="Eskenazi, B" uniqKey="Eskenazi B" first="B." last="Eskenazi">B. Eskenazi</name><affiliation wicri:level="1"><nlm:aff id="af20"><addr-line>Center for Environmental Research and Children's Health</addr-line>,<institution>UC Berkeley School of Public Health, 1995 University Avenue</institution>,<addr-line>Suite 265, Berkeley, CA 94704</addr-line>,<country>USA</country></nlm:aff><country xml:lang="fr">États-Unis</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Tremellen, K" sort="Tremellen, K" uniqKey="Tremellen K" first="K." last="Tremellen">K. Tremellen</name><affiliation><nlm:aff id="af21"><addr-line>Repromed, 180 Fullarton Road, Dulwich, Adelaide & School of Pharmacy and Medical Sciences</addr-line>,<institution>University of South Australia</institution>,<addr-line>Adelaide</addr-line>,<country>South Australia</country></nlm:aff><wicri:noCountry code="nlm country">South Australia</wicri:noCountry></affiliation></author><author><name sortKey="Magnusdottir, E V" sort="Magnusdottir, E V" uniqKey="Magnusdottir E" first="E. V." last="Magnusdottir">E. V. Magnusdottir</name><affiliation wicri:level="1"><nlm:aff id="af22"><addr-line>Department of Pharmacology and Toxicology</addr-line>,<institution>University of Iceland</institution>,<addr-line>Hofsvallagata 53, IS-107 Reykjavik</addr-line>,<country>Iceland</country></nlm:aff><country xml:lang="fr">Islande</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Fejes, I" sort="Fejes, I" uniqKey="Fejes I" first="I." last="Fejes">I. Fejes</name><affiliation wicri:level="1"><nlm:aff id="af23"><addr-line>Department of Ophthalmology</addr-line>,<institution>University of Szeged</institution>,<addr-line>H6720 Szeged, Koranyi fsr 10-11</addr-line>,<country>Hungary</country></nlm:aff><country xml:lang="fr">Hongrie</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Hercberg, S" sort="Hercberg, S" uniqKey="Hercberg S" first="S." last="Hercberg">S. Hercberg</name><affiliation wicri:level="1"><nlm:aff id="af2"><addr-line>Unité de Recherche en Epidémiologie Nutritionnelle, UMR U557 Inserm; U1125 Inra; Cnam</addr-line>;<institution>Université Paris 13</institution>,<addr-line>CRNH IdF, 93017 Bobigny</addr-line>,<country>France</country></nlm:aff><country xml:lang="fr">France</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation><affiliation wicri:level="1"><nlm:aff id="af24"><addr-line>Département de Santé Publique</addr-line>,<institution>Hôpital Avicenne (AP-HP)</institution>,<addr-line>93017 Bobigny</addr-line>,<country>France</country></nlm:aff><country xml:lang="fr">France</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Levy, R" sort="Levy, R" uniqKey="Levy R" first="R." last="Lévy">R. Lévy</name><affiliation wicri:level="1"><nlm:aff id="af1"><addr-line>Service d'Histologie-Embryologie-Cytogénétique-CECOS</addr-line>,<institution>Hôpital Jean Verdier (AP-HP)</institution>,<addr-line>93143 Bondy</addr-line>,<country>France</country></nlm:aff><country xml:lang="fr">France</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation><affiliation wicri:level="1"><nlm:aff id="af2"><addr-line>Unité de Recherche en Epidémiologie Nutritionnelle, UMR U557 Inserm; U1125 Inra; Cnam</addr-line>;<institution>Université Paris 13</institution>,<addr-line>CRNH IdF, 93017 Bobigny</addr-line>,<country>France</country></nlm:aff><country xml:lang="fr">France</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Czernichow, S" sort="Czernichow, S" uniqKey="Czernichow S" first="S." last="Czernichow">S. 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Sermondade</name><affiliation wicri:level="1"><nlm:aff id="af1"><addr-line>Service d'Histologie-Embryologie-Cytogénétique-CECOS</addr-line>,<institution>Hôpital Jean Verdier (AP-HP)</institution>,<addr-line>93143 Bondy</addr-line>,<country>France</country></nlm:aff><country xml:lang="fr">France</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation><affiliation wicri:level="1"><nlm:aff id="af2"><addr-line>Unité de Recherche en Epidémiologie Nutritionnelle, UMR U557 Inserm; U1125 Inra; Cnam</addr-line>;<institution>Université Paris 13</institution>,<addr-line>CRNH IdF, 93017 Bobigny</addr-line>,<country>France</country></nlm:aff><country xml:lang="fr">France</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Faure, C" sort="Faure, C" uniqKey="Faure C" first="C." last="Faure">C. Faure</name><affiliation wicri:level="1"><nlm:aff id="af1"><addr-line>Service d'Histologie-Embryologie-Cytogénétique-CECOS</addr-line>,<institution>Hôpital Jean Verdier (AP-HP)</institution>,<addr-line>93143 Bondy</addr-line>,<country>France</country></nlm:aff><country xml:lang="fr">France</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation><affiliation wicri:level="1"><nlm:aff id="af2"><addr-line>Unité de Recherche en Epidémiologie Nutritionnelle, UMR U557 Inserm; U1125 Inra; Cnam</addr-line>;<institution>Université Paris 13</institution>,<addr-line>CRNH IdF, 93017 Bobigny</addr-line>,<country>France</country></nlm:aff><country xml:lang="fr">France</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Fezeu, L" sort="Fezeu, L" uniqKey="Fezeu L" first="L." last="Fezeu">L. Fezeu</name><affiliation wicri:level="1"><nlm:aff id="af2"><addr-line>Unité de Recherche en Epidémiologie Nutritionnelle, UMR U557 Inserm; U1125 Inra; Cnam</addr-line>;<institution>Université Paris 13</institution>,<addr-line>CRNH IdF, 93017 Bobigny</addr-line>,<country>France</country></nlm:aff><country xml:lang="fr">France</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Shayeb, A G" sort="Shayeb, A G" uniqKey="Shayeb A" first="A. G." last="Shayeb">A. G. Shayeb</name><affiliation wicri:level="1"><nlm:aff id="af3"><institution>University Hospital of Wales</institution>,<addr-line>Heath Park, Cardiff CF 14 4XW</addr-line>,<country>UK</country></nlm:aff><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Bonde, J P" sort="Bonde, J P" uniqKey="Bonde J" first="J. P." last="Bonde">J. P. Bonde</name><affiliation wicri:level="1"><nlm:aff id="af4"><addr-line>Department of Occupational and Environmental Medicine</addr-line>,<institution>Bispebjerg Hospital of Copenhagen University</institution>,<addr-line>Bispebjerg Bakke, 2400 Copenhagen NV</addr-line>,<country>Denmark</country></nlm:aff><country xml:lang="fr">Danemark</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Jensen, T K" sort="Jensen, T K" uniqKey="Jensen T" first="T. K." last="Jensen">T. K. Jensen</name><affiliation wicri:level="1"><nlm:aff id="af5"><institution>University Department of Growth and Reproduction</institution>,<addr-line>GR 5064, Rigshospitalet, Blegdamsveg 9, 2100 Copenhagen</addr-line>,<country>Denmark</country></nlm:aff><country xml:lang="fr">Danemark</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Van Wely, M" sort="Van Wely, M" uniqKey="Van Wely M" first="M." last="Van Wely">M. Van Wely</name><affiliation wicri:level="1"><nlm:aff id="af6"><addr-line>Centre for Reproductive Medicine, Department of Obstetrics and Gynaecology</addr-line>,<institution>Academic Medical Centre</institution>,<addr-line>Meibergdreef 9, H4-205, 1105 AZ Amsterdam</addr-line>,<country>The Netherlands</country></nlm:aff><country xml:lang="fr">Pays-Bas</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Cao, J" sort="Cao, J" uniqKey="Cao J" first="J." last="Cao">J. Cao</name><affiliation wicri:level="1"><nlm:aff id="af7"><addr-line>College of Preventive Medicine</addr-line>,<institution>Third Military Medical University</institution>,<addr-line>No. 30 Gaotanyan Road, Shapingba District, Chongqing 400038</addr-line>,<country>China</country></nlm:aff><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Martini, A C" sort="Martini, A C" uniqKey="Martini A" first="A. C." last="Martini">A. C. Martini</name><affiliation wicri:level="1"><nlm:aff id="af8"><institution>Instituto de Fisiologia, Facultad de Ciencias Medicas, Universidad Nacional de Cordoba</institution>,<addr-line>Santa Rosa 1085, X5000ESU Cordoba</addr-line>,<country>Argentina</country></nlm:aff><country xml:lang="fr">Argentine</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Eskandar, M" sort="Eskandar, M" uniqKey="Eskandar M" first="M." last="Eskandar">M. Eskandar</name><affiliation wicri:level="1"><nlm:aff id="af9"><addr-line>Department of Obstetrics and Gynaecology</addr-line>,<institution>College of Medicine, King Khalid University</institution>,<addr-line>PO Box 641, Abha</addr-line>,<country>Saudi Arabia</country></nlm:aff><country xml:lang="fr">Arabie saoudite</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Chavarro, J E" sort="Chavarro, J E" uniqKey="Chavarro J" first="J. E." last="Chavarro">J. E. Chavarro</name><affiliation wicri:level="1"><nlm:aff id="af10"><addr-line>Department of Nutrition and Epidemiology</addr-line>,<institution>Harvard School of Public Health</institution>,<addr-line>665 Huntington Ave, Boston, MA 02115</addr-line>,<country>USA</country></nlm:aff><country xml:lang="fr">États-Unis</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation><affiliation wicri:level="1"><nlm:aff id="af11"><addr-line>Channing Laboratory, Department of Medicine</addr-line>,<institution>Brigham and Women's Hospital and Harvard Medical School</institution>,<addr-line>Boston, MA 02115</addr-line>,<country>USA</country></nlm:aff><country xml:lang="fr">États-Unis</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Koloszar, S" sort="Koloszar, S" uniqKey="Koloszar S" first="S." last="Koloszar">S. Koloszar</name><affiliation wicri:level="1"><nlm:aff id="af12"><addr-line>Department of Obstetrics and Gynaecology</addr-line>,<institution>University of Szeged</institution>,<addr-line>6725 Szeged, Semmelweis u.1.</addr-line>,<country>Hungary</country></nlm:aff><country xml:lang="fr">Hongrie</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Twigt, J M" sort="Twigt, J M" uniqKey="Twigt J" first="J. M." last="Twigt">J. M. Twigt</name><affiliation wicri:level="1"><nlm:aff id="af13"><addr-line>Departments of Obstetrics and Gynaecology, Room Ee22.71a, Erasmus MC</addr-line>,<institution>University Medical Center</institution>,<addr-line>PO Box 2040, 3000 CA Rotterdam</addr-line>,<country>The Netherlands</country></nlm:aff><country xml:lang="fr">Pays-Bas</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Ramlau Hansen, C H" sort="Ramlau Hansen, C H" uniqKey="Ramlau Hansen C" first="C. H." last="Ramlau-Hansen">C. H. Ramlau-Hansen</name><affiliation wicri:level="1"><nlm:aff id="af14"><addr-line>Department of Public Health, Section of Epidemiology</addr-line>,<institution>Aarhus University</institution>,<addr-line>8000 Aarhus C</addr-line>,<country>Denmark</country></nlm:aff><country xml:lang="fr">Danemark</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Borges, E" sort="Borges, E" uniqKey="Borges E" first="E." last="Borges">E. Borges</name><affiliation wicri:level="1"><nlm:aff id="af15"><institution>Fertility-Assisted Fertilization Center</institution>,<addr-line>Av. Brig. Luis Antonio, 4545 Sao Paulo</addr-line>,<country>Brazil</country></nlm:aff><country xml:lang="fr">Brésil</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Lotti, F" sort="Lotti, F" uniqKey="Lotti F" first="F." last="Lotti">F. Lotti</name><affiliation wicri:level="1"><nlm:aff id="af16"><addr-line>Sexual Medicine and Andrology Unit, Department of Clinical Physiopathology</addr-line>,<institution>University of Florence</institution>,<addr-line>Viale Pieraccini 6, I-50139 Florence</addr-line>,<country>Italy</country></nlm:aff><country xml:lang="fr">Italie</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Steegers Theunissen, R P M" sort="Steegers Theunissen, R P M" uniqKey="Steegers Theunissen R" first="R. P. M." last="Steegers-Theunissen">R. P. M. Steegers-Theunissen</name><affiliation wicri:level="1"><nlm:aff id="af13"><addr-line>Departments of Obstetrics and Gynaecology, Room Ee22.71a, Erasmus MC</addr-line>,<institution>University Medical Center</institution>,<addr-line>PO Box 2040, 3000 CA Rotterdam</addr-line>,<country>The Netherlands</country></nlm:aff><country xml:lang="fr">Pays-Bas</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Zorn, B" sort="Zorn, B" uniqKey="Zorn B" first="B." last="Zorn">B. Zorn</name><affiliation wicri:level="1"><nlm:aff id="af17"><addr-line>Andrology Center, Department of Obstetrics and Gynecology</addr-line>,<institution>University Medical Center Ljubljana</institution>,<addr-line>Ljubljana</addr-line>,<country>Slovenia</country></nlm:aff><country xml:lang="fr">Slovénie</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Polotsky, A J" sort="Polotsky, A J" uniqKey="Polotsky A" first="A. J." last="Polotsky">A. J. Polotsky</name><affiliation wicri:level="1"><nlm:aff id="af18"><addr-line>Department of Obstetrics and Gynecology</addr-line>,<institution>University of Colorado Denver</institution>,<addr-line>12631 East 17th Avenue, Mail Stop B198-3, Academic Office 1, Room 4515, Aurora, CO 80045</addr-line>,<country>USA</country></nlm:aff><country xml:lang="fr">États-Unis</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="La Vignera, S" sort="La Vignera, S" uniqKey="La Vignera S" first="S." last="La Vignera">S. La Vignera</name><affiliation wicri:level="1"><nlm:aff id="af19"><institution>University of Catania, Section of Andrology, Endocrinology and Internal Medicine, Policlinico ‘G. Rodolico’</institution>,<addr-line>Via S. Sofia 78, 95123 Catania</addr-line>,<country>Italy</country></nlm:aff><country xml:lang="fr">Italie</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Eskenazi, B" sort="Eskenazi, B" uniqKey="Eskenazi B" first="B." last="Eskenazi">B. Eskenazi</name><affiliation wicri:level="1"><nlm:aff id="af20"><addr-line>Center for Environmental Research and Children's Health</addr-line>,<institution>UC Berkeley School of Public Health, 1995 University Avenue</institution>,<addr-line>Suite 265, Berkeley, CA 94704</addr-line>,<country>USA</country></nlm:aff><country xml:lang="fr">États-Unis</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Tremellen, K" sort="Tremellen, K" uniqKey="Tremellen K" first="K." last="Tremellen">K. Tremellen</name><affiliation><nlm:aff id="af21"><addr-line>Repromed, 180 Fullarton Road, Dulwich, Adelaide & School of Pharmacy and Medical Sciences</addr-line>,<institution>University of South Australia</institution>,<addr-line>Adelaide</addr-line>,<country>South Australia</country></nlm:aff><wicri:noCountry code="nlm country">South Australia</wicri:noCountry></affiliation></author><author><name sortKey="Magnusdottir, E V" sort="Magnusdottir, E V" uniqKey="Magnusdottir E" first="E. V." last="Magnusdottir">E. V. Magnusdottir</name><affiliation wicri:level="1"><nlm:aff id="af22"><addr-line>Department of Pharmacology and Toxicology</addr-line>,<institution>University of Iceland</institution>,<addr-line>Hofsvallagata 53, IS-107 Reykjavik</addr-line>,<country>Iceland</country></nlm:aff><country xml:lang="fr">Islande</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Fejes, I" sort="Fejes, I" uniqKey="Fejes I" first="I." last="Fejes">I. Fejes</name><affiliation wicri:level="1"><nlm:aff id="af23"><addr-line>Department of Ophthalmology</addr-line>,<institution>University of Szeged</institution>,<addr-line>H6720 Szeged, Koranyi fsr 10-11</addr-line>,<country>Hungary</country></nlm:aff><country xml:lang="fr">Hongrie</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Hercberg, S" sort="Hercberg, S" uniqKey="Hercberg S" first="S." last="Hercberg">S. Hercberg</name><affiliation wicri:level="1"><nlm:aff id="af2"><addr-line>Unité de Recherche en Epidémiologie Nutritionnelle, UMR U557 Inserm; U1125 Inra; Cnam</addr-line>;<institution>Université Paris 13</institution>,<addr-line>CRNH IdF, 93017 Bobigny</addr-line>,<country>France</country></nlm:aff><country xml:lang="fr">France</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation><affiliation wicri:level="1"><nlm:aff id="af24"><addr-line>Département de Santé Publique</addr-line>,<institution>Hôpital Avicenne (AP-HP)</institution>,<addr-line>93017 Bobigny</addr-line>,<country>France</country></nlm:aff><country xml:lang="fr">France</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Levy, R" sort="Levy, R" uniqKey="Levy R" first="R." last="Lévy">R. Lévy</name><affiliation wicri:level="1"><nlm:aff id="af1"><addr-line>Service d'Histologie-Embryologie-Cytogénétique-CECOS</addr-line>,<institution>Hôpital Jean Verdier (AP-HP)</institution>,<addr-line>93143 Bondy</addr-line>,<country>France</country></nlm:aff><country xml:lang="fr">France</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation><affiliation wicri:level="1"><nlm:aff id="af2"><addr-line>Unité de Recherche en Epidémiologie Nutritionnelle, UMR U557 Inserm; U1125 Inra; Cnam</addr-line>;<institution>Université Paris 13</institution>,<addr-line>CRNH IdF, 93017 Bobigny</addr-line>,<country>France</country></nlm:aff><country xml:lang="fr">France</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Czernichow, S" sort="Czernichow, S" uniqKey="Czernichow S" first="S." last="Czernichow">S. Czernichow</name><affiliation wicri:level="1"><nlm:aff id="af25"><addr-line>Department of Nutrition</addr-line>,<institution>Ambroise Paré Hospital (AP-HP); University of Versailles Saint Quentin en Yvelines</institution>,<addr-line>9 avenue Charles-de-Gaulle, 92100 Boulogne-Billancourt</addr-line>,<country>France</country></nlm:aff><country xml:lang="fr">France</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation><affiliation wicri:level="1"><nlm:aff id="af26"><institution>INSERM, U1018, Centre for Research in Epidemiology and Population Health</institution>,<addr-line>Villejuif</addr-line>,<country>France</country></nlm:aff><country xml:lang="fr">France</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author></analytic><series><title level="j">Human Reproduction Update</title><idno type="ISSN">1355-4786</idno><idno type="eISSN">1460-2369</idno><imprint><date when="2012">2012</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec><title>BACKGROUND</title><p>The global obesity epidemic has paralleled a decrease in semen quality. Yet, the association between obesity and sperm parameters remains controversial. The purpose of this report was to update the evidence on the association between BMI and sperm count through a systematic review with meta-analysis.</p></sec><sec><title>METHODS</title><p>A systematic review of available literature (with no language restriction) was performed to investigate the impact of BMI on sperm count. Relevant studies published until June 2012 were identified from a Pubmed and EMBASE search. We also included unpublished data (<italic>n</italic> = 717 men) obtained from the Infertility Center of Bondy, France. Abstracts of relevant articles were examined and studies that could be included in this review were retrieved. Authors of relevant studies for the meta-analysis were contacted by email and asked to provide standardized data.</p></sec><sec><title>RESULTS</title><p>A total of 21 studies were included in the meta-analysis, resulting in a sample of 13 077 men from the general population and attending fertility clinics. Data were stratified according to the total sperm count as normozoospermia, oligozoospermia and azoospermia. Standardized weighted mean differences in sperm concentration did not differ significantly across BMI categories. There was a J-shaped relationship between BMI categories and risk of oligozoospermia or azoospermia. Compared with men of normal weight, the odds ratio (95% confidence interval) for oligozoospermia or azoospermia was 1.15 (0.93–1.43) for underweight, 1.11 (1.01–1.21) for overweight, 1.28 (1.06–1.55) for obese and 2.04 (1.59–2.62) for morbidly obese men.</p></sec><sec><title>CONCLUSIONS</title><p>Overweight and obesity were associated with an increased prevalence of azoospermia or oligozoospermia. The main limitation of this report is that studied populations varied, with men recruited from both the general population and infertile couples. Whether weight normalization could improve sperm parameters should be evaluated further.</p></sec></div></front></TEI><affiliations><list><country><li>Arabie saoudite</li><li>Argentine</li><li>Brésil</li><li>Danemark</li><li>France</li><li>Hongrie</li><li>Islande</li><li>Italie</li><li>Pays-Bas</li><li>Royaume-Uni</li><li>République populaire de Chine</li><li>Slovénie</li><li>États-Unis</li></country></list><tree><noCountry><name sortKey="Tremellen, K" sort="Tremellen, K" uniqKey="Tremellen K" first="K." last="Tremellen">K. Tremellen</name></noCountry><country name="France"><noRegion><name sortKey="Sermondade, N" sort="Sermondade, N" uniqKey="Sermondade N" first="N." last="Sermondade">N. Sermondade</name></noRegion><name sortKey="Czernichow, S" sort="Czernichow, S" uniqKey="Czernichow S" first="S." last="Czernichow">S. Czernichow</name><name sortKey="Czernichow, S" sort="Czernichow, S" uniqKey="Czernichow S" first="S." last="Czernichow">S. Czernichow</name><name sortKey="Faure, C" sort="Faure, C" uniqKey="Faure C" first="C." last="Faure">C. Faure</name><name sortKey="Faure, C" sort="Faure, C" uniqKey="Faure C" first="C." last="Faure">C. Faure</name><name sortKey="Fezeu, L" sort="Fezeu, L" uniqKey="Fezeu L" first="L." last="Fezeu">L. Fezeu</name><name sortKey="Hercberg, S" sort="Hercberg, S" uniqKey="Hercberg S" first="S." last="Hercberg">S. Hercberg</name><name sortKey="Hercberg, S" sort="Hercberg, S" uniqKey="Hercberg S" first="S." last="Hercberg">S. Hercberg</name><name sortKey="Levy, R" sort="Levy, R" uniqKey="Levy R" first="R." last="Lévy">R. Lévy</name><name sortKey="Levy, R" sort="Levy, R" uniqKey="Levy R" first="R." last="Lévy">R. Lévy</name><name sortKey="Sermondade, N" sort="Sermondade, N" uniqKey="Sermondade N" first="N." last="Sermondade">N. Sermondade</name></country><country name="Royaume-Uni"><noRegion><name sortKey="Shayeb, A G" sort="Shayeb, A G" uniqKey="Shayeb A" first="A. G." last="Shayeb">A. G. Shayeb</name></noRegion></country><country name="Danemark"><noRegion><name sortKey="Bonde, J P" sort="Bonde, J P" uniqKey="Bonde J" first="J. P." last="Bonde">J. P. Bonde</name></noRegion><name sortKey="Jensen, T K" sort="Jensen, T K" uniqKey="Jensen T" first="T. K." last="Jensen">T. K. Jensen</name><name sortKey="Ramlau Hansen, C H" sort="Ramlau Hansen, C H" uniqKey="Ramlau Hansen C" first="C. H." last="Ramlau-Hansen">C. H. Ramlau-Hansen</name></country><country name="Pays-Bas"><noRegion><name sortKey="Van Wely, M" sort="Van Wely, M" uniqKey="Van Wely M" first="M." last="Van Wely">M. Van Wely</name></noRegion><name sortKey="Steegers Theunissen, R P M" sort="Steegers Theunissen, R P M" uniqKey="Steegers Theunissen R" first="R. P. M." last="Steegers-Theunissen">R. P. M. Steegers-Theunissen</name><name sortKey="Twigt, J M" sort="Twigt, J M" uniqKey="Twigt J" first="J. M." last="Twigt">J. M. Twigt</name></country><country name="République populaire de Chine"><noRegion><name sortKey="Cao, J" sort="Cao, J" uniqKey="Cao J" first="J." last="Cao">J. Cao</name></noRegion></country><country name="Argentine"><noRegion><name sortKey="Martini, A C" sort="Martini, A C" uniqKey="Martini A" first="A. C." last="Martini">A. C. Martini</name></noRegion></country><country name="Arabie saoudite"><noRegion><name sortKey="Eskandar, M" sort="Eskandar, M" uniqKey="Eskandar M" first="M." last="Eskandar">M. Eskandar</name></noRegion></country><country name="États-Unis"><noRegion><name sortKey="Chavarro, J E" sort="Chavarro, J E" uniqKey="Chavarro J" first="J. E." last="Chavarro">J. E. Chavarro</name></noRegion><name sortKey="Chavarro, J E" sort="Chavarro, J E" uniqKey="Chavarro J" first="J. E." last="Chavarro">J. E. Chavarro</name><name sortKey="Eskenazi, B" sort="Eskenazi, B" uniqKey="Eskenazi B" first="B." last="Eskenazi">B. Eskenazi</name><name sortKey="Polotsky, A J" sort="Polotsky, A J" uniqKey="Polotsky A" first="A. J." last="Polotsky">A. J. Polotsky</name></country><country name="Hongrie"><noRegion><name sortKey="Koloszar, S" sort="Koloszar, S" uniqKey="Koloszar S" first="S." last="Koloszar">S. Koloszar</name></noRegion><name sortKey="Fejes, I" sort="Fejes, I" uniqKey="Fejes I" first="I." last="Fejes">I. Fejes</name></country><country name="Brésil"><noRegion><name sortKey="Borges, E" sort="Borges, E" uniqKey="Borges E" first="E." last="Borges">E. Borges</name></noRegion></country><country name="Italie"><noRegion><name sortKey="Lotti, F" sort="Lotti, F" uniqKey="Lotti F" first="F." last="Lotti">F. Lotti</name></noRegion><name sortKey="La Vignera, S" sort="La Vignera, S" uniqKey="La Vignera S" first="S." last="La Vignera">S. La Vignera</name></country><country name="Slovénie"><noRegion><name sortKey="Zorn, B" sort="Zorn, B" uniqKey="Zorn B" first="B." last="Zorn">B. Zorn</name></noRegion></country><country name="Islande"><noRegion><name sortKey="Magnusdottir, E V" sort="Magnusdottir, E V" uniqKey="Magnusdottir E" first="E. V." last="Magnusdottir">E. V. Magnusdottir</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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