Sperm Quality and Tap Water: Disinfection By-Product Effects Not Supported
2007
Sperm Quality and Tap Water: Disinfection By-Product Effects Not Supported
Sample size: 228
publication
Evidence: low
Author Information
Author(s): Brown Valerie J.
Hypothesis
Does exposure to disinfection by-products in tap water affect sperm quality?
Conclusion
The study found weak evidence that disinfection by-products in tap water damage sperm quality.
Supporting Evidence
- Previous studies have linked disinfection by-products to reproductive abnormalities.
- The top 25th percentile for THM and HAA exposure had higher sperm counts than the bottom 50th percentile.
- Sperm concentration decreased with increased TOX exposure, suggesting TOX may be a greater risk factor.
Takeaway
The study looked at how chemicals in tap water might affect sperm, and it found that higher exposure didn't lead to worse sperm quality.
Methodology
The study assessed sperm quality in 228 men and estimated their exposure to disinfection by-products from tap water.
Limitations
The study population was presumed fertile, which may mask small decreases in sperm count.
Participant Demographics
Men recruited from couples participating in a project on spontaneous abortion.
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