Author/Authors :
Vaziri، Mohammad Hossein نويسنده Faculty of Health, Safety and Environment (HSE), Shahid Beheshti University of Medical Sciences, Tehran, Iran , , Sadighi Gilani، Mohammad Ali نويسنده , , Kavousi، Amir نويسنده Faculty of Health, Safety and Environment (HSE), Shahid Beheshti University of Medical Sciences, Tehran, Iran , , Firoozeh، Marjan نويسنده Faculty of Health, Safety and Environment (HSE), Shahid Beheshti University of Medical Sciences, Tehran, Iran , , Khani Jazani، Reza نويسنده Faculty of Health, Safety and Environment (HSE), Shahid Beheshti University of Medical Sciences, Tehran, Iran , , Vosough Taqi Dizaj، Ahmad نويسنده Department of Reproductive Imaging, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran , , sadat Mohseni، Habib نويسنده Faculty of Health, Safety and Environment (HSE), Shahid Beheshti University of Medical Sciences, Tehran, Iran , , Bagery Lankarani، Narges نويسنده Department of Epidemiology and Reproductive Health, Reproductive Biomedicine Research Center,Royan Institute for Reproductive Biomedicine, ACECR, , , Azizi، Mohammad نويسنده Department of Andrology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran , , Salman Yazdi، Reza نويسنده ,
Abstract :
Background: Infertility can be a major concern for couples trying to conceive, and occupational hazards may constitute a main cause of infertility in men. Studies conducted throughout the world indicate that physical and chemical hazards in the workplace can have a negative impact on male fertility. The main objective of this study was to determine the frequency of occupational categories of men who attended an infertility clinic, and to evaluate the differences in the semen quality parameters among occupational categories.
Materials and Methods: This cross-sectional study was conducted on 1164 males who were referred to the Infertility Research Center in Tehran for treatment of infertility in order to evaluate the effects of certain occupations on infertility. The participants were divided into several categories according to their occupations and evaluated by means of a questionnaire for duration of infertility, BMI, sperm count, percentage of normal sperm morphology and percentages of sperm with class A and class B motilities. Descriptive statistics, analysis of variance, and correlations were conducted using SPSS 16.0 for Windows. Results: There were no statistically significant differences in the mean sperm count or sperm morphology between occupational categories. Assessment of the differences in the frequency of sperm motility classes between occupational categories revealed a significant difference only in the frequency of sperm with class B motility. The lowest mean percentages of sperm with class B motility were seen in those involved in the transportation industry, a finding in agreement with a number of other researches. Conclusion: Our findings revealed an association between occupation and sperm motility. Since our study population was relatively small and in many cases exposures to work hazards were brief, a larger study group must be evaluated in order to support the preliminary results of this study.
