Document Detail

Semen quality in welders exposed to radiant heat.
MedLine Citation:
PMID:  1733456     Owner:  NLM     Status:  MEDLINE    
Several studies suggest that welding is detrimental to the male reproductive system. Welding fume and radiant heat are of interest as possible causal factors. This study investigates semen quality and sex hormone concentrations among 17 manual metal arc alloyed steel welders with a moderate exposure to radiant heat (globe temperature ranging from 31.1 degrees to 44.8 degrees C), but without substantial exposure to welding fume toxicants. During exposure to heat the skin temperature in the groin increased on average by 1.4 degrees C (SE +/- 0.72 degrees C). Sperm count and motile sperm count were non-significantly reduced among welders in comparison with two different reference groups. Within the group of welders the proportion of sperm with normal shape declined significantly after six weeks of exposure to heat and increased after a break in exposure. Sperm count and sperm concentration had the same pattern of intraindividual change in relation to exposure to radiant heat, but the changes were not statistically significant. No consistent changes in concentrations of sex hormones were found. The welders investigated were more exposed to radiant heat than welders in general. The results suggest that the study group of welders experienced a reversible decrease in semen quality, most likely caused by a moderate exposure to radiant heat (about five hours a day through several weeks). It remains to be established if even lower levels of exposure to radiant heat in the general population of welders has any impact on semen quality and fertility.
J P Bonde
Related Documents :
23366416 - In vitro degradation and cytocompatibility of magnesium-zinc-strontium alloys with huma...
21880376 - Foreign body reaction after cochlear implantation.
16916246 - Titanium casting using commercial phosphate-bonded investments with quick heating method.
1520226 - Development of a new device to measure local heat exchange by evaporation and convection.
22143736 - Characteristics of 351 supernumerary molar teeth in turkish population.
2700626 - Adapting fixed prosthodontics principles to screw-retained restorations.
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  British journal of industrial medicine     Volume:  49     ISSN:  0007-1072     ISO Abbreviation:  Br J Ind Med     Publication Date:  1992 Jan 
Date Detail:
Created Date:  1992-03-05     Completed Date:  1992-03-05     Revised Date:  2009-11-18    
Medline Journal Info:
Nlm Unique ID:  0370637     Medline TA:  Br J Ind Med     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  5-10     Citation Subset:  IM    
Department of Occupational Medicine, Hospital of Aalborg, Denmark.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Cross-Sectional Studies
Hot Temperature / adverse effects*
Longitudinal Studies
Middle Aged
Occupational Exposure*
Semen / physiology*
Skin Temperature
Sperm Count
Sperm Motility / physiology
Testosterone / blood
Reg. No./Substance:
Comment In:
Br J Ind Med. 1993 Nov;50(11):1055-6   [PMID:  8280633 ]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  A mortality study of Danish stokers.
Next Document:  A cross sectional epidemiological survey of shipyard workers exposed to hand-arm vibration.