Annals of Occupational and Environmental Medicine

Original Article

The Effects of the Frequency of Fish Consumption on the Blood Mercury Levels in Koreans: Chan Woo Kim, Young Wook Kim, Chang Ho Chae, Jun Seok Son, Seung Hyun Park, Jae Chul Koh, Dae Seon Kim; Korean Journal of Occupational and Environmental Medicine 2010;22(2):114-121. Published online June 30, 2010; DOI: https://doi.org/10.35371/kjoem.2010.22.2.114

OBJECTIVE: We studied two districts in Korea in order to investigate if the frequency of fish consumption has an effect on the blood mercury levels.
METHODS
This survey was conducted on 164 fishing district residents in Geoje city and 219 agricultural district residents in Changwon city from July to August in 2008. The data on the demographic characteristics, the living environment, lifestyle habits and the frequency of fish consumption was collected by interviewers. We used ANOVA to estimate the particular relevance between the frequency of fish consumption and the blood mercury concentration, and other various factors.
RESULTS
The mean total blood mercury level was 6.54+/-4.01 microgram/L for the total study population. Our results were even higher than that of the National Health and Nutrition Examination Survey (USA) in, 2001~2002 and the German Environmental Survey in, 1998. In this study, there was a significant difference for the frequency of eating fish between the groups. (p<0.01, The level of the groups that ate fish 3 to 4 times per week was significantly higher as compared with the level of the other groups that ate fish 2 to 3 times per month and 1 to 2 times per week, respectively). As the frequency of fish consumption increased, so did the blood mercury concentration.
CONCLUSIONS
We found that the blood mercury concentration increases along with fish consumption and this was statistically significant and this fact reveals that fish consumption is positively related to the blood levels of mercury. Accordingly, we need systematic and periodic research on the general population to prevent mercury poisoning, which can be caused by low-level mercury exposure from dietary intake such as chronic fish consumption.

Citations

Citations to this article as recorded by

Infantile allergic diseases: a cohort study prenatal fish intake and mercury exposure context
Surabhi Shah, Hae Soon Kim, Yun-Chul Hong, Hyesook Park, Mina Ha, Yangho Kim, Ji Hyen Lee, Eun-Hee Ha
BMC Public Health.2024;[Epub] CrossRef
Association of Blood Mercury Level with the Risk of Depression According to Fish Intake Level in the General Korean Population: Findings from the Korean National Health and Nutrition Examination Survey (KNHANES) 2008–2013
Kyung Won Kim, Sundara Raj Sreeja, Minji Kwon, Ye Lee Yu, Mi Kyung Kim
Nutrients.2020; 12(1): 189. CrossRef
Level of Blood Lead and Urine Cotinine of Residents by Area
Yu-Jin Oh, Hyoung-Wook Kim, Yun-Jae Kim, Yoon-Deok Han, Sung-Hyeon Jung, Jong-Dae Lee, Bong-Ki Jang, Jin-Heon Lee, Bu-Soon Son
Journal of Environmental Science International.2019; 28(3): 329. CrossRef
A Review for the Long-Term Trend and Spatial Distribution of Soil Mercury Concentration in South Korea
Pyung-Rae Kim, Dae-Young Kim, Young-Ji Han
Journal of Korean Society of Environmental Engineers.2019; 41(6): 346. CrossRef
An analysis of factors affecting the mercury content in the human femoral bone
A. Zioła-Frankowska, M. Dąbrowski, Ł. Kubaszewski, P. Rogala, A. Kowalski, M. Frankowski
Environmental Science and Pollution Research.2017; 24(1): 547. CrossRef
The associations between blood mercury levels and shark meat intake among workers in Gyeongsangbuk-do
Gun Il Park, Young Seok Byun, Man Joong Jeon, Joon Sakong
Annals of Occupational and Environmental Medicine.2017;[Epub] CrossRef
A Study on Mercury Exposure Levels among Schoolchildren and Related Factors in High Mercury Exposure Areas in Korea
Dae Seon Kim, Young Min Kwon, Hee-Ung Chung, Sang Hoon Nam, Seung Do Yu
Korean Journal of Environmental Health Sciences.2015; 41(4): 231. CrossRef
Mercury Exposure Factors among Residents in the Highly Mercury Exposed Area, Seoksan-ri, Korea
Dae Seon KIM, Young Min Kwon, Hee-Ung Chung, Kyunghee CHOI
Korean Journal of Environmental Health Sciences.2015; 41(5): 349. CrossRef
Population correlates of circulating mercury levels in Korean adults: the Korea National Health and Nutrition Examination Survey IV
Seongbeom Cho, David R Jacobs, Kyong Park
BMC Public Health.2014;[Epub] CrossRef
A Study on Concentrations of Heavy Metal in Blood and Urine of Local Area in Korea
Ji-Young Im, Eun-Kyung Chung, Hee-Jin Park, Seungdo Yu, Bong-Ki Jang, Bu-Soon Son
Journal of Environmental Science International.2013; 22(1): 59. CrossRef
The Relationships Between Blood Mercury Concentration and Body Composition Measures Using 2010 Korean National Health and Nutrition Examination Survey
Dae-won Kang, Ka-young Lee
The Korean Journal of Obesity.2013; 22(4): 237. CrossRef
The Relationship between Fish Consumption and Blood Mercury Levels in Residents of Busan Metropolitan City and Gyeongnam Province
Chan Woo Kim, Young Wook Kim, Chang Ho Chae, Jun Seok Son, Ja Hyeon Kim, Hyoung Ouk Park, Yune-Sik Kang, Jang-Rak Kim, Young Seoub Hong, Dae-Seon Kim, Baek Geun Jeong
Journal of agricultural medicine and community health.2012; 37(4): 223. CrossRef
The Influence of Fish Consumption on Umbilical Cord Blood Mercury Level in Pregnant Women in the City of Tongyeong, Korea
Chul-Won Jang, Sang-Hyun Kim, Jong-Duck Choi
Journal of Food Hygiene and Safety.2012; 27(1): 74. CrossRef
Developing a Questionnaire to Assess Exposure to Food-Borne Hazards
Sangah Shin, Seul Ki Choi, Hyemi Kim, Kyung Youn Lee, Sanghee Shin, Jung Won Lee, Soo Hyun Yu, Hye-Soen Nam, Hae-Jung Yoon, Hyojee Joung
The Korean Journal of Nutrition.2011; 44(1): 61. CrossRef
Blood Heavy Metal Concentrations of Korean Adults by Seafood Consumption Frequency: Using the Fourth Korea National Health and Nutrition Examination Survey (KNHANES IV), 2008
Young A Kim, Young-Nam Kim, Kyung-Dong Cho, Mi Young Kim, Eun Jin Kim, Ok-Hee Baek, Bog-Hieu Lee
The Korean Journal of Nutrition.2011; 44(6): 518. CrossRef
Total and methyl mercury in maternal and cord blood of pregnant women in Korea
Dae Seon Kim, Geun Bae Kim, Tackshin Kang, Seungchul Ahn
Toxicology and Environmental Health Sciences.2011; 3(4): 254. CrossRef

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Original Article

The Impact of Noise Expose on the Hearing Threshold Extended High Frequency: Nam Jeong Kim, Joong Keun Kwon, Ji Ho Lee; Korean Journal of Occupational and Environmental Medicine 2008;20(2):81-92. Published online June 30, 2008; DOI: https://doi.org/10.35371/kjoem.2008.20.2.81

Abstract PDF

OBJECTIVES
To determine how extended high frequency is affected by noise exposure and other factors that maybe have adverse effects.
METHODS
Pure tone audiometry for usual frequencies (250-8000 Hz) and extended high frequencies (1000-16000 Hz) was conducted for 331 workers at a manufacturing company from 2004 to 2005. History of noise exposure, military service, tinnitus, alcohol drinking, smoking, ear diseases, and noisy hobbies were taken by interview. T-test, ANOVA, and multiple regression was conducted according to the frequency to evaluate the factors that could affect extended high frequency hearing.
RESULTS
The noise-exposed group had significantly poorer hearing than the noise-unexposed in the frequency range 2000-16000 Hz. The hearing deteriorated with increasing age through all the frequencies. High frequency hearing of 14000 Hz was significantly worse in the noise-exposed group in their 30s. Noise exposure during military service had a bad effect on hearing, especially for the noise-unexposed group. Tinnitus was associated with poorer hearing in both noise-exposed and noise-unexposed groups. Workers with noisy hobbies exhibited better hearing in the noise-unexposed group, contrary to our expectation. Extended high-frequency hearing was affected by aging, ear protection, and noisy hobbies. In extended high frequency, 14000 Hz was especially related with noise exposure history.
CONCLUSIONS
Extended high frequency, especially 14000 Hz, could be used as an indicator of noiseinduced hearing loss and should be considered as a screening test for workers in noisy environments.

Citations

Citations to this article as recorded by

Stress of Noise on Dental Technician
Ju Hee Lee
Journal of Korean Acedemy of Dental Technology.2014; 36(2): 111. CrossRef

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Original Article

Usefulness of Power Spectral Analysis for Measurement of Local Muscle Fatigue during Keyboard Task: Soon Young Kwon, Chung Yill Park, Jung Wan Koo, Hyeon Woo Yim, Kang Sook Lee; Korean Journal of Occupational and Environmental Medicine 1999;11(4):449-459. Published online December 31, 1999; DOI: https://doi.org/10.35371/kjoem.1999.11.4.449

Abstract PDF: OBJECTIVES
Work-related upper extremity disorders of the tendons, nerves, and musdes associated with. repetitive motion represent an increasing proportion of occupational illnesses, medical services, and workers' compensation costs. Severe local muscle fatigue may be a precursor of repetition strain injuries. The demand for objective and quantitative assessment of local muscle fatigue is now increasing. The purpose of this study is to determine the usefulness of power spectral analysis of individual muscle as one of the objective spectral parameters in quantification of local muscle fatigue.
METHODS
From 10 normal male without neuromuscular dysfuction, motor unit action potentials (MUAPs) of three muscles (upper trapezius, infraspinatus, and anterior deltoid) of left shoulder girdle were obtained. The surface electrodes were used and the changes of power spectrum according to frequency components were calculated per minute during the keyboard task for 30-minute period by power spectral analysis of MUAPs signal.
RESULTS
There was a linear relationship between median frequency (MF) and time flow in the upper trapezius muscle, however the same was not observed in other muscles. The MF slope of the upper trapezius muscle showed a decline of the MF over time and reflected the fatigue rate. Other spectral parameters, such as mean frequency and total power were not significantly correlated to time flow during the keyboard task in all three muscles. And no significant correlation was observed between keying rate and slope of median frequency of upper trapezius muscle.
CONCLUSIONS
Above results suggested that the power spectral analysis on median frequency in upper trapezius muscle would be useful in quantification of local muscle fatigue during the keyboard task and local muscle fatigue of shoulder was affected by static posture, not by keying rate.

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Original Article

Selection of Testing Frequency in Bone Vibrator of Audiometer for Measurement of Vivration Perception Threshold: Jong Young Lee, Wan Seoup Park, Yeong Hwan Kim, Doohie Kim; Korean Journal of Occupational and Environmental Medicine 1994;6(1):17-25. Published online February 28, 1994; DOI: https://doi.org/10.35371/kjoem.1994.6.1.17

Abstract PDF: Both to determine testing frequency in bone vibrator of audiometer for measurement of vibration perception threshold(VPT) and to evaluate factors influencing VPT, ninty seven healthy adults were tested on their second metacarpal head of both hands, at 250Hz, 500Hz, 1,000Hz and so on. Measures of the VPTs at 1,000Hz were excluded in analysis because frequency 1,000Hz was not recognized as a vibration sense. Mean and standard deviation(S.D.) of the VPTs in the both hands measured at 250Hz were 19.9+/-6.7dB, 21.0+/-7.3dB, respectively and at 500Hz were 33.6+/-8.3dB, 34.9+/-8.1dB, respectively. Both mean and S.D. tended to be lower at 250Hz than 500Hz, and mean differences of VPTs between the left and the right hand at the both frequencies appeared statistically significant (p<0.01). VPTs were significantly correlated with each other (p<0.01). Age was positively correlated(p<0.001) with VPTs and education was negatively(p<0.01). Multiple regression analysis showed that age was the only factor influenced on VPT. These results suggest that, when using the bone vibrator of audiometer for measurement of VPT, the frequency 250Hz as a testing frequency may be more useful than frequency 500Hz, and VPT should be measured on both hands.

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