J Agric Med Community Health.
2012 Dec;37(4):223-232.
The Relationship between Fish Consumption and Blood Mercury Levels in Residents of Busan Metropolitan City and Gyeongnam Province
- Affiliations
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- 1Department of Occupational & Environmental Medicine, Samsung Changwon Hospital, College of Medicine, Sungkyunkwan University, Korea.
- 2Department of Preventive Medicine, School of Medicine, Gyeongsang National University & Institute of Health Sciences, Korea. jjbkkr@yahoo.co.kr
- 3Department of Preventive Medicine, College of Medicine, Dong-A University, Korea.
- 4Environmental Health Research Division, Environmental Health Research Department, National Institute of Environment Research, Korea.
Abstract
OBJECTIVES
The objective of this study was to identify the relationship between fish consumption and blood mercury levels in a sample of adult Koreans.
METHODS
The study subjects were 299 residents of Busan (male: 65, female: 234) and 185 residents of Namhae (male: 69, female: 116), South Korea. Demographic characteristics, current smoking, current drinking, fish consumption per week, past history of amalgam treatment, and residential district were recorded by trained interviewers in June and July, 2009. We considered a portion of fish to be equivalent to 70 gm weight, and calculated amounts of fish consumed per week. Using chi-square tests, t-tests, ANOVA, and multiple linear regression analysis, we estimated the relationships between blood mercury levels and amount of fish consumed per week and other factors.
RESULTS
The mean blood mercury level of our subjects was 6.61 microgram/L, higher than the criterion defined by the United States Environmental Protection Agency (EPA) (5.8 microgram/L). In multiple linear regression analysis, residential district and amount of fish consumed per week were associated with blood mercury levels. However, marital status, current drinking, and gender, and age were not associated with blood mercury levels.
CONCLUSIONS
In conclusion, we suggest the implementation of systematic and periodic population-based studies to decrease the risks of mercury poisoning among South Koreans who consume fish as a regular part of the diet.
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