Journal of Preventive Medicine and Public Health

Original Articles

Health Effects of Heavy Metal Exposure Among E-waste Workers and Community-dwelling Adults in Thailand: A Cross-sectional Study: Chonyitree Sangwijit, Parichat Ong-artborirak, Warangkana Naksen, Kraiwuth Kallawicha, Pallop Siewchaisakul; J Prev Med Public Health. 2025;58(2):156-166. Published online November 21, 2024; DOI: https://doi.org/10.3961/jpmph.24.415

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Abstract Summary PDF Supplementary Material: Objectives
Global concern is increasing about the health effects of electronic waste (e-waste). This study examines the health impacts of heavy metal (HM) exposure among e-waste workers (EWWs) and community-dwelling adults (CDAs) in Northeastern Thailand and identifies factors associated with adverse health outcomes.
Methods
A cross-sectional study was conducted of 164 EWWs and 164 CDAs. A survey was employed to collect data on participant characteristics, symptoms, anxiety, depression, and sleep quality. Urine samples were analyzed for lead (Pb) and cadmium (Cd) levels using atomic absorption spectrometry. Multiple logistic regression analysis was used to identify factors impacting health.
Results
Across all participants, urinary Pb and Cd levels ranged from 5.30 µg/g to 29.50 µg/g creatinine and from 0.60 µg/g to 4.00 µg/g creatinine, respectively. The most frequently reported health issues pertained to musculoskeletal disorders (MSDs) at 38.70%, central nervous system (CNS) issues at 36.60%, and skin disorders at 31.10%. Multivariable analysis indicated that the presence of MSDs was significantly associated with exposure to Pb and Cd. Poor sleep quality (PSQ) was significantly linked to CNS problems, while body mass index was significantly related to skin disorders. Factors including primary education level or below, smoking, cleaning the house more than 3 times weekly, and PSQ were significantly linked to depression. Anxiety was significantly associated with PSQ.
Conclusions
Environmental exposure to Pb and Cd can have adverse health impacts in the form of MSDs. Depression and anxiety are common conditions among CDAs. Public health officials should monitor HM exposure and mental health within the community.; Summary

Key Message
- Pb and Cd level was not significant difference between e-waste workers and community-dwelling adults. - Pb and Cd can adversely affect symptoms in the MSD and PSQ affects the CNS in e-waste workers. - E-waste workers had a higher chance of having musculoskeletal disorder, central nervous system disorder, and skin disorder problems than community-dwelling adults but a lower chance of having depression and anxiety than community-dwelling adults.

Association Between Cadmium Exposure and Liver Function in Adults in the United States: A Cross-sectional Study: Dongui Hong, Jin-Young Min, Kyoung-Bok Min; J Prev Med Public Health. 2021;54(6):471-480. Published online November 30, 2021; DOI: https://doi.org/10.3961/jpmph.21.435

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Abstract Summary PDF Supplementary Material

Objectives
Cadmium is widely used, leading to extensive environmental and occupational exposure. Unlike other organs, for which the harmful and carcinogenic effects of cadmium have been established, the hepatotoxicity of cadmium remains unclear. Some studies detected correlations between cadmium exposure and hepatotoxicity, but others concluded that they were not associated. Thus, we investigated the relationship between cadmium and liver damage in the general population.
Methods
In total, 11 838 adult participants from National Health and Nutrition Examination Survey 1999-2015 were included. Urinary cadmium levels and the following liver function parameters were measured: alanine aminotransferase (ALT), aspartate aminotransferase (AST), gamma glutamyl transferase (GGT), total bilirubin (TB), and alkaline phosphatase (ALP). Linear and logistic regression analyses were performed to assess the associations between urinary cadmium concentrations and each liver function parameter after adjusting for age, sex, race/ethnicity, annual family income, smoking status, alcohol consumption status, physical activity, and body mass index.
Results
The covariate-adjusted results of the linear regression analyses showed significant positive relationships between log-transformed urinary cadmium levels and each log-transformed liver function parameter, where beta±standard error of ALT, AST, GGT, TB, and ALP were 0.049±0.008 (p<0.001), 0.030±0.006 (p<0.001), 0.093±0.011 (p<0.001), 0.034±0.009 (p<0.001), and 0.040±0.005 (p<0.001), respectively. Logistic regression also revealed statistically significant results. The odds ratios (95% confidence intervals) of elevated ALT, AST, GGT, TB, and ALP per unit increase in log-transformed urinary cadmium concentration were 1.360 (1.210 to 1.528), 1.307 (1.149 to 1.486), 1.520 (1.357 to 1.704), 1.201 (1.003 to 1.438), and 1.568 (1.277 to 1.926), respectively.
Conclusions
Chronic exposure to cadmium showed positive associations with liver damage.

Summary

Korean summary
카드뮴은 사회 전반에서 널리 쓰이고 있어 직업적인 노출은 물론 환경적인 노출이 빈번히 일어나고 있다. 본 연구는 미국 국민건강영양조사 데이터를 이용하였으며 소변 내 카드뮴의 증가는 알라닌 아미노전이효소 (ALT), 아스파테이트 아미노전이효소 (AST), 감마 글루타밀전이효소 (GGT), 총 빌리루빈, 알칼리 인산분해효소 (ALP)의 상승과 관련이 있었다. 따라서 만성적인 카드뮴 노출은 간 손상과 연관이 있다고 할 수 있다.

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English Abstract

The Effect of Exposure Factors on the Concentration of Heavy Metals in Residents Near Abandoned Metal Mines.: Sanghoo Kim, Yong Min Cho, Seung Hyun Choi, Hae Joon Kim, Jaewook Choi; J Prev Med Public Health. 2011;44(1):41-47.; DOI: https://doi.org/10.3961/jpmph.2011.44.1.41

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Abstract PDF

OBJECTIVES
This study assessed the factors that have an influence on the residents exposed to heavy metals, and we utilized the findings to establish the proper management of abandoned metal mines in the future. METHODS: For a total of 258 residents who lived close to abandoned mines in Gangwon-province and Gyeonggi-province, the exposure factors and biomarkers in their blood and urine were comparatively analyzed via multiple regression analysis. RESULTS: The blood levels of lead and mercury and the cadmium levels in urine were found to be higher in the study group than that in the average Korean. For the blood levels of heavy metals according to each exposure factor, all of them were found to be significantly higher in both of the group residing for a longer period of time and the group living closer to the source of pollutants. Multiple regression analysis disclosed that all the heavy metals, except lead, in their blood were significantly reduced in proportion to the increased distance of inhabitancy from the mines. Their other biomarkers were within the normal ranges. CONCLUSIONS: We found that the distance between the residential village and the mines was a factor that affects the blood level of heavy metals in the villagers. This finding could be an important factor when developing a management model for the areas that surround abandoned metal mines. (ED note: I much like this important study.)

Summary

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Original Articles

A study on heavy metal concentration of cosmetics on the market.: Hun Lee, Yoo Jung Yoo, Myoung Hee Park, Jung Ho Kim, Yong Hee Lee, Chan Seok Moon, Yong Shik Hwang, Deog Hwan Moon; Korean J Prev Med. 1998;31(4):666-679.

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Abstract PDF: This study aims at providing the fundamental data on the field of cosmetics by comparing heavy metal concentration in terms of domestic / foreign products, items, companies and colors. This study has determined the concentration of chromium, lead, mangagnese, nickel, copper and vanadium in cosmetics such as moisturizer, concealer, foundation (Ivory-yellow), compact powder (Ivory-yellow), lip color (Red, brown), eye shadow (Red, brwon and dark green) and eye liner (Black) manufactured by five domestic cosmetic companies and five foreign cosmetic companies on the market. The samples have been collected in cosmetic stores in Pusan from Dec. lst 1996 to Jan. 3lst 1997. The results are as follows : 1. The heavy metal concentration in cosmetics was 2.42ng/g for chromium, 0.82ng/g for lead, 4.49ng/g for manganese, 1.69ng/g for nickel, 0.53ng/g for copper, and 0.51ng/g for vanadium, respectively. 2. Lead and vanadium concentration were significantly higher in domestic cosmetics than foreign cosmetics(p<0.05). 3. The mean(GM) concentrations of heavy metal were different significantly (p<0.01) when classified with cosmetic items. The highest means shown at eye shadow in Cr (14.96ng/g), Cu (1.32ng/g), V (1.28ng/g), and Ni (8.30ng/g), compact powder in Pb(2.50ng/g), eye liner in Mn(90.62ng/g). 4. The mean(GM) concentrations of heavy metal were different significantly (p<0.01) among colored cosmetics. The highest mean concentration of Cr, Ni, Cu and V were dark green- colored cosmetics, that of Mn was black-colored cosmetics, and that of Pb was ivory yellow-colored cosmetics.; Summary

Relationship between Violent Criminal Behavior and Imbalance of Scalp Hair Minerals in Man.: Doo Hie Kim, Bon Ki Jang, Duk Hee Lee, Sung Chul Hong, Byung Hie Kim; Korean J Prev Med. 1994;27(1):25-43.

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Abstract PDF: To estimate the factors to the inclination of the criminal violence, the content of trace minerals and toxic metals in the scalp hair were measured during the period from May 1992 to october 1992. One hundred eleven violent and 89 nonviolent criminal inmates of Taegu correctional Institute were selected. The inmates of violent criminals were imprisoned by murder, robber, rape, injury and violent acts. Those of nonviolent criminals were swindle, larceny, and adultery and had no history of institutional violence. The contents of two toxic metals(cadmium, lead) and five trace minerals(Cu, Fe, Zn, Mg, Na) were determined by an atomic absorption spectrophotometer(lL. 551). The contents of cadmium and lead in hair of violent criminals were significantly higher as 0.56+/-0.14ppm, 11.53+/-3.32ppm, respectively, than 0.42+/-0.20ppm, 9.63+/-4.31ppm of nonviolent group (P<0.01). But the level of copper was significantly lower than nonviolent group (P<0.05). The factors that had a significant correlation with the inclination of violence in multiple logistic regression analysis were cadmium (odds ratio=98.09), unmarried (odds ratio=0.39), many times of criminal history (odds ratio=l.57) and residence of rural area (odds ratio=0.44). The results suggest that the sub-toxic contents of cadmium and lead in the hair may be of potential effect on behavior, and the mineral analysis may be an important adjunctive diagnostic procedure. Further studies into this problem are necessary.; Summary

Assessment of the Naktong river pollution after phenol spillage from the Kumi industrial estates II, Korea.: Doo Hie Kim, Bong Ki Jang, Sung Chul Hong, Hyo Jung Moon, Duck Hee Lee, Hae Ju Oh; Korean J Prev Med. 1993;26(2):268-281.

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Abstract PDF: The aquatic quality of the Naktong river after two of three months in June, 1991 with phenol spillage from a electrical factory in Kumi was investigated. The samples were collected at six sites of the Naktong river basin and Kachang and Kongsan lakes. Phenol was not detected from all water samples. Turbidity was very much increased to the down stream in the Naktong river. The BOD and COD values exceeded the 2nd grade(3 mg/l) of the Korean standard quality of Environmental Water Act at the all sampling sites of the Naktong river. Especially, the value of COD at Kaejin (12.5 mg/l) was poorly classified as to the 5th grade of water class for the environmental quality standards. Organophosphorous pesticides such as parathion, malathion, fenitrothion and diazinon were investigated but not detected. Diazinon was only detected at the Ilson bridge(1.42 ppb), Okkye stream(6.95 ppb), Waekwan bridge(0.32 ppb), Gangjung reservior(0.13 ppb), Kaejin(0.05 ppb). Of the carbamates such as carbanyl, isoprocarb and cabofuran, the carbofuran was detected all sites except tap water, and Kachang and Kongsan lakes. The content of heavy metals such ans Cd, Pb, Zn, Fe, Mn, Hg were not exceeding for drinking water standards at the all sampling region, but only mecury was detected from Okkye stream(0.018ppb) and Kaejin(0.09ppb). In the regions of Kachang and Kongsan lakes, the content of heavy metals were lower than that of reservoir of Naktong river.; Summary

Selenium Effect on the Frequency of SCEs Induced by Heavy Metals in Human Lymphocytes.: Dai Ha Koh, No Suk Ki; Korean J Prev Med. 1990;23(1):1-10.

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Abstract PDF: The protective effect of sodium selenite (Na2SeO3) against the cytogenetic toxicity of heavy metals was investigated on human whole-blood cultures in relation to induction of sister chromatid exchange(SCE) in secondary metaphase chromosome. Methlmercury chloride (CH3HgCl), cadmium chloride (CdCl2), Potassium dichromate (K2Cr2O7), and sodium selenite caused to the typically dose-dependent increase in sister chromatid exchanges (SCEs) by the concentrations ranging from 0.3 micro M to 10 micro M. However, the inductions of sister chromatid exchanges by methymercury chloride or cadmium chloride were inhibited by the simultaneous addition of sodium selenite 1.2 micro M. The frequencies of SCE were decreased to the level of control in the molar ratios as 2 : 1, 1 : 1, 1 : 2, and 1 : 4 of selenium selenite vs. methylmercury chloride, and as 1 : 1 and 1 : 2 of selenium selenite vs. cadmium chloride, while the frequencies of SCE induced by potassium dichromate were not changed by the addition of sodium selenite in culture condition. Mitotic indices were decreased in the higher concentrations of chemicals and not significantly changed by the simultaneous addition of sodium selenite to the culture condition containing each chemicals.; Summary

A Study on the Heavy Metal Contents of Soil and Rice in the Kum River Basin.: Young Oh Kim, Hyung Yul Yoo, Jae Hyung Lee, No Suk Ki, In Dam Hwang; Korean J Prev Med. 1988;21(2):320-328.

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Abstract PDF: This study was carried out to investigate the heavy metal contents and their correlations between paddy soil and brown rice near the Kum-River area. In this study, eighty soil samples and forty brown rice samples were taken from the paddy soil. The contents of heavy metals were measured by flame atomic absorption spectrophotometry. The results were as follows: 1. The average contents of soluble heavy metals in surface soil were Cd 0.19, Cu 15.31, Zn 18.10 and Pb 9.08 ppm. The average contents of soluble heavy metals in subsurface soil were Cd 0.19, Cu 14.52, Zn 17.75 and Pb8.11 ppm. There wan no statistically significant difference between the two layers. 2. The contents of Cu, Zn and Pb of Taejeon(S6) and Cd of Sinbyung(S5) in surface soil were higher than those of other areas. The contents of Cd and Cu of Taejeon(S6) and Zn and Pb of Kumnam(S3) in brown rice were higher than those of other areas and four heavy metals in soil and brown rice of Simchon(S7) were lower than those of other areas. 3. The ratio of soluble contents(Cd : Cu : Zn : Pb) in surface soil was 1 : 79 : 93 : 47, that of soluble contents in subsurface soil was 1 : 79 : 94 : 43, and that of total contents in brown rice was 1 : 84 : 294 : 12. 4. The correlations of the content between soluble heavy metals in surface(0-15 cm depth) soil total heavy metals in brown rice was found to be order of Cd>Cu>Zn>Pb. The correlations of the content between soluble heavy metals in subsurface(20-30 cm depth) soil and total heavy metals in brown rice was found to be order of Cu>Cd>Zn>Pb.; Summary

A Study on the Heavy Metal Contents in Freshwater Fishes of the Mankyung River.: Nam Song Kim; Korean J Prev Med. 1988;21(1):121-131.

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Abstract PDF: This study was performed to investigate the heavy metal contents of freshwater fishes. The samples of 24 species were collected at 7 areas located on the Mankyung River during September in 1987. And then the contents of lead, cadmium, copper and zine were analyzed by atomic absorption spectrophotometer. The results were summarized as follows ; 1. The mean value of lead, cadmium, and copper contents of fishes collected in the downstream were significantly higher than those of upstream. 2. The mean lead content of C. auratus was the highest 1.50+/-0.98 microgram/g in viscera and statistically significant difference from muscle content. 3. The mean cadmium content of C. auratus was the highest 0.087+/-0.054 microgram/g and significantly higher than that of muscle, skeleton and gill. 4. In the copper contents, the viscera of C. auratus was the highest 5.25+/-0.94 microgram/g and significantly higher than that of muscle, skeleton and gill. 5. The mean value of zinc content of C. auratus was shown the order of gill, skeleton, viscera and muscle.; Summary

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