Long-Term Low-Level Arsenic Exposure and Neuropsychological Functioning
Author Information
Author(s): Sid E. O’Bryant, Melissa Edwards, Chloe V. Menon, Gordon Gong, Robert Barber
Primary Institution: Texas Tech University Health Sciences Center
Hypothesis
Increased low-level arsenic exposure would be significantly correlated with poorer scores in the domains of global cognition, executive functioning, memory, and language.
Conclusion
The study found that long-term low-level arsenic exposure is associated with poorer neuropsychological functioning in adults and elders.
Supporting Evidence
- Long-term low-level arsenic exposure was significantly correlated with poorer scores in global cognition, language, executive functioning, and memory.
- The study utilized a community-based participatory research approach to recruit participants.
- Current estimated groundwater arsenic exposure was significantly associated with poorer scores in language, visuospatial skills, and executive functioning.
Takeaway
Drinking water with low levels of arsenic for a long time can make it harder for people to think and remember things.
Methodology
The study analyzed data from 434 participants using neuropsychological tests and GIS methods to estimate arsenic exposure.
Potential Biases
Potential bias due to reliance on self-reported duration of residence and estimated arsenic levels.
Limitations
The study's cross-sectional design limits causal inference, and there was no direct measurement of arsenic levels at participants' homes.
Participant Demographics
Participants included 133 men and 301 women, with a mean age of 62.12 years and 42% identifying as Hispanic.
Statistical Information
P-Value
p<0.001
Confidence Interval
95% CI = 0.55–0.69
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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