BMI in relation to sperm count: an updated systematic review and collaborative meta-analysis.

SERMONDADE N; FAURE C; FEZEU L; SHAYEB AG; BONDE JP; JENSEN TK; VAN WELY M ; CAO J; MARTINI AC; ESKANDAR M; CHAVARRO JE; KOLOSZAR S; TWIGT JM; RAMLAU-HANSEN CH; BORGES JR E; LOTTI F; STEEGERS-THEUNISSEN RPM; ZORN B; POLOTSKY AJ; LA VIGNERA S; ESKENAZI B; TREMELLEN K; MAGNUSDOTTIR EV; FEJES L; HERCBERG S; LEVY R ; CZERNICHOW S

OXFORD UNIV PRESS

Lugar: Oxford; Año: 2013 vol. 19 p. 221 - 221

ackground: 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. methods: 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 We also included unpublished data (n ¼ 717 men) obtained from the Infertility Center of Bondy, France.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. results: A total of 21 studies were included in the meta-analysis, resulting in a sample of 13 077 men from the