Caffeine Intake and Semen Quality in a Population of 2,554 Young Danish Men

Cecilia Ramlau-Hansen; Ane Marie Thulstrup; Jens Peter Bonde; Jørn Olsen; B Bech

doi:10.1093/aje/kwq007

Caffeine Intake and Semen Quality in a Population of 2,554 Young Danish Men

Authors:

Ramlau-Hansen, Cecilia ;
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0000-0003-3296-0121
Institute of Epidemiology and Social Medicine, Faculty of Health Sciences, Aarhus University, Aarhus University
Thulstrup, Ane Marie ;
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Arbejdsmedicinsk Klinik, NBG, Faculty of Health Sciences, Aarhus University, Aarhus University
Bonde, Jens Peter ;
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Arbejdsmedicinsk Klinik, NBG, Faculty of Health Sciences, Aarhus University, Aarhus University
Olsen, Jørn ;
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0000-0001-7462-5140
Institute of Epidemiology and Social Medicine, Faculty of Health Sciences, Aarhus University, Aarhus University
Bech, B
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unknown

DOI:

10.1093/aje/kwq007

Abstract:

The authors examined the association between semen quality and caffeine intake among 2,554 young Danish men recruited when they were examined to determine their fitness for military service in 2001-2005. The men delivered a semen sample and answered a questionnaire including information about caffeine intake from various sources, from which total caffeine intake was calculated. Moderate caffeine and cola intakes (101-800 mg/day and <or =14 0.5-L bottles of cola/week) compared with low intake (<or =100 mg/day, no cola intake) were not associated with semen quality. High cola (>14 0.5-L bottles/week) and/or caffeine (>800 mg/day) intake was associated with reduced sperm concentration and total sperm count, although only significant for cola. High-intake cola drinkers had an adjusted sperm concentration and total sperm count of 40 mill/mL (95% confidence interval (CI): 32, 51) and 121 mill (95% CI: 92, 160), respectively, compared with 56 mill/mL (95% CI: 50, 64) and 181 mill (95% CI: 156, 210) in non-cola-drinkers, which could not be attributed to the caffeine they consumed because it was

Type:

Journal article

Language:

English

Published in:

American Journal of Epidemiology, 2010, Vol 171, Issue 8, p. 883-91

Keywords:

Analysis of Variance; Caffeine; Chi-Square Distribution; Cross-Sectional Studies; Denmark; Drinking Behavior; Food Habits; Humans; Life Style; Male; Men; Military Personnel; Questionnaires; Regression Analysis; Semen; Semen Analysis; Sperm Count; Sperm Motility; Statistics, Nonparametric; Journal Article; Research Support, Non-U.S. Gov't

Main Research Area:

Medical science

Publication Status:

Published

Review type:

Peer Review

Submission year:

2010

Scientific Level:

Scientific

ID:

3749132

Caffeine Intake and Semen Quality in a Population of 2,554 Young Danish Men

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