National estimation of seafood consumption in Mexico: Implications for exposure to methylmercury and polyunsaturated fatty acids
Autor: | Carolina Batis, Alejandra Cantoral, Niladri Basu |
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Rok vydání: | 2016 |
Předmět: |
0301 basic medicine
Male Health Toxicology and Mutagenesis 010501 environmental sciences 01 natural sciences chemistry.chemical_compound Eating Food science Child Methylmercury General Environmental Science chemistry.chemical_classification education.field_of_study integumentary system biology Sardine Fishes food and beverages General Medicine Methylmercury Compounds Pollution Shrimp Trout Child Preschool Fatty Acids Unsaturated Female Polyunsaturated fatty acid Adult Environmental Engineering Adolescent Population Mullet 03 medical and health sciences Young Adult Environmental health Environmental Chemistry Animals Humans Exposure measurement education Mexico 0105 earth and related environmental sciences Consumption (economics) 030109 nutrition & dietetics Public Health Environmental and Occupational Health Infant General Chemistry Environmental Exposure biology.organism_classification Diet Fishery chemistry Seafood General Earth and Planetary Sciences |
Zdroj: | Chemosphere. 174 |
ISSN: | 1879-1298 |
Popis: | Background Seafood is a good source of Omega-3 polyunsaturated fatty acids (ω3-PUFA) but also contains the toxic contaminant methylmercury (MeHg). National estimates of exposure to both compounds through seafood intake in Mexico are not known. The objective of the current study was to describe national seafood consumption habits and to estimate seafood-based exposure to ω3-PUFAs and MeHg. Methods We analyzed data from a 24-h dietary recall extracted from the 2012 National Health and Nutrition Survey of Mexico (n = 10,096 subjects aged 1y and older). National per capita seafood intake as well as information on age, sex, socioeconomic status, and geographic region was obtained. The contribution of each seafood item to the total MeHg exposure was estimated, as was the balance between estimated exposures to ω3-PUFAs and MeHg. Results A mean daily seafood intake of 10 g/day was estimated. The top species consumed in decreasing order were: canned tuna, sunfish, shrimp, mullet, carp and schoolshark (constituted 60% of seafood intake). Canned tuna and schoolshark contributed 75% of the population's estimated exposure to MeHg. The best balance of population-level exposures to ω3-PUFAs and MeHg was found in salmon, sardine, trout and anchovies. Conclusion Environmental dietary exposure to MeHg is a public health concern and thus a good understanding of seafood consumption is needed to create national consumption guidelines. The current study provides nationally-representative data in Mexico from which decisions can be made (e.g., UN Minamata Convention) and future studies conducted. |
Databáze: | OpenAIRE |
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