News | Guangzhou Women and Children's Medical Center Study Examines Effects of Living Near Chemical Plants and Substations on Semen Quality
A study in Scientific Reports indicates that environmental and occupational factors significantly affect semen quality. It evaluated associations between living and working environments and semen quality among Chinese men, finding that some exposures may adversely affect male fertility.
Background
Birth rates are declining worldwide while infertility is increasing. In China, the infertility rate has reached 12.5% and continues to rise. Infertility is generally defined as not achieving pregnancy after one year of regular unprotected intercourse. Male factors account for about 40% of infertility among couples.
Male fertility is closely related to environmental, genetic, and occupational factors. Many men experience the same workplace and environmental exposures over long periods, potentially creating cumulative effects on fertility. Assessing these influences is therefore important.
Study Design
The study was conducted at Guangzhou Women and Children's Medical Center and included 465 men aged 31 to 43. Men with a history of infertility, obesity, or overweight were excluded. Participants completed three questionnaires covering their living environment, occupational exposures, and basic demographic characteristics. All participants also underwent physical examination and semen analysis.
The study assessed semen pH, volume, sperm count, concentration, progressive motility, and total motility.
Findings
Men living near power lines and substations had higher sperm counts and progressive motility, suggesting a possible positive association between electromagnetic fields and semen quality. Further research is needed to confirm this finding.
By contrast, men living near chemical plants had lower sperm concentrations, consistent with earlier research on the adverse effects of industrial chemicals on semen quality. Damage from multiple environmental and occupational factors is often cumulative.
Conclusion
The study found significant associations between environmental and occupational factors and semen quality. Chemical exposure near chemical plants and occupational factors such as computer use and electrical utility work were associated with lower semen quality. Despite limitations in sample diversity and assessment of specific substances, the results provide a basis for larger future studies.
News | Guangzhou Women and Children's Medical Center Study Examines Effects of Living Near Chemical Plants and Substations on Semen Quality
News | Guangzhou Women and Children's Medical Center Study Examines Effects of Living Near Chemical Plants and Substations on Semen Quality
A study in Scientific Reports indicates that environmental and occupational factors significantly affect semen quality. It evaluated associations between living and working environments and semen quality among Chinese men, finding that some exposures may adversely affect male fertility.
Background
Birth rates are declining worldwide while infertility is increasing. In China, the infertility rate has reached 12.5% and continues to rise. Infertility is generally defined as not achieving pregnancy after one year of regular unprotected intercourse. Male factors account for about 40% of infertility among couples.
Male fertility is closely related to environmental, genetic, and occupational factors. Many men experience the same workplace and environmental exposures over long periods, potentially creating cumulative effects on fertility. Assessing these influences is therefore important.
Study Design
The study was conducted at Guangzhou Women and Children's Medical Center and included 465 men aged 31 to 43. Men with a history of infertility, obesity, or overweight were excluded. Participants completed three questionnaires covering their living environment, occupational exposures, and basic demographic characteristics. All participants also underwent physical examination and semen analysis.
The study assessed semen pH, volume, sperm count, concentration, progressive motility, and total motility.
Findings
Men living near power lines and substations had higher sperm counts and progressive motility, suggesting a possible positive association between electromagnetic fields and semen quality. Further research is needed to confirm this finding.
By contrast, men living near chemical plants had lower sperm concentrations, consistent with earlier research on the adverse effects of industrial chemicals on semen quality. Damage from multiple environmental and occupational factors is often cumulative.
Conclusion
The study found significant associations between environmental and occupational factors and semen quality. Chemical exposure near chemical plants and occupational factors such as computer use and electrical utility work were associated with lower semen quality. Despite limitations in sample diversity and assessment of specific substances, the results provide a basis for larger future studies.
Source:
Collected online