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Abstract
Inorganic and organic forms of arsenic (As), as well as omega-3 fatty acids were measured in 578 fish/seafood samples that belong to15 species of commonly consumed seafood in Kuwait. Arsenic speciation data, with the toxicological profile of inorganic arsenic (iAs) and fish consumption rates were applied in a probabilistic risk assessment to estimate the risk from exposure to iAs. The nutritional benefits of omega-3-fatty acid levels in various species of fish were taken into consideration. Results showed that the mean daily intake of iAs through fish consumption among the Kuwaiti population was 0.058µg/kg/day, and the 95th percentile was 0.15µg/kg/day. Although the mean intake level did not exceed the incremental lifetime cancer risk (ILCR) at 1×10-4, the 95th percentile of iAs intake showed an ILCR of 2.7×10-4. Kuwaiti children (aged 6-12years) were found to have a higher mean intake of iAs at 0.10µg/kg/day with 68% of children in this category, exceeding the risk specific dose associated with an ILCR of 1×10-4. The fish species, hammor (grouper; Epinephelus coioides), is the top contributor to iAs intake, and tuna is the major source of omega 3-fatty acids for the Kuwaiti population.
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