National estimation of seafood consumption in Mexico: Implications for exposure to methylmercury and polyunsaturated fatty acids

Autor: Carolina Batis, Alejandra Cantoral, Niladri Basu
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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