Arsenic Levels in U.S. Rice
Author Information
Author(s): Carol Potera
Primary Institution: University of Aberdeen
Hypothesis
Does rice grown in the south central United States contain higher levels of arsenic compared to rice grown in California?
Conclusion
Rice grown in the south central U.S. contains, on average, 1.76 times more arsenic than rice grown in California.
Supporting Evidence
- Rice grown in the south central U.S. averaged 0.30 μg/g of arsenic, while California rice averaged 0.17 μg/g.
- High-arsenic rice could lead to exceeding the U.S. EPA's drinking water standard for arsenic.
- Organic growing conditions do not guarantee low arsenic levels in rice.
Takeaway
Some rice from the southern U.S. has more arsenic than rice from California, which could be a problem for people who eat a lot of it.
Methodology
The study involved purchasing 134 varieties of rice and analyzing their arsenic content.
Potential Biases
Potential bias in the selection of rice samples and the interpretation of arsenic levels.
Limitations
The study does not establish a direct health risk from arsenic in rice consumption.
Participant Demographics
Rice consumption varies by demographic, with Asian Americans consuming the most.
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