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  • 101.
    Wennberg, Maria
    et al.
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Nutritional Research.
    Jönsson, Bo AG.
    Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden.
    Lindh, Christian H
    Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden.
    Bergdahl, Ingvar
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine.
    Organic pollutants in urine 2014 and levels of bisphenol A 2009 and 2014 in the adult population of Northern Sweden2015Report (Other academic)
  • 102.
    Wennberg, Maria
    et al.
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Nutritional Research.
    Lindh, Christian
    Occupational and Environmental Medicine, Lund University, Lund, Sweden.
    Bergdahl, Ingvar
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine. Umeå University, Faculty of Medicine, Department of Biobank Research.
    Organiska miljöföroreningar i urin hos unga i norra och södra Sverige2018Report (Other academic)
    Abstract [sv]

    Det är viktigt att följa halter av miljöföroreningar hos människor, för riskvärdering och för att få kunskap om hur exponeringen kan minskas.

    Organiska miljöföroreningar (ftalat-metaboliter, bisfenol A, bisfenol F, triklosan, pesticiderna 3-PBA och TCP samt PAH-metaboliten 1-HP) analyserades i urin hos 204 unga i Skåne (gymnasieelever, år 2013) och hos 143 unga i MONICA-studien i norra Sverige (25-35 år, år 2014). Koncentrationer jämfördes statistiskt mellan studierna och kopplingar till levnadsvanor som efterfrågades i båda studierna undersöktes (rökning, fiskintag, intag av mat från konserver och typ av golv i sovrum). En kompletterande enkätstudie gjordes på deltagarna i MONICA-studien som uppgav att de hade plastgolv i sovrummet (n=65), för att utröna om golvvärme under plastgolv i sovrummet kan öka exponering av "plast-ftalaten" MBzP.

    De statistiskt säkerställda skillnader som uppdagades var att de unga i norr hade högre koncentration av de flesta ftalat-metaboliter och av pesticiden 3-PBA medan de unga i söder hade högre koncentration av triklosan.

    Ftalat-metaboliten MBzP kunde kopplas till att ha plastgolv i sovrummet i båda studiepopulationerna. Då endast fyra personer i MONICA-studien uppgav golvvärme under plastgolv och den gruppen inte hade anmärkningsvärt hög MBzP-koncentration i urin kan inte högre användning av golvvärme i norr vara förklaringen till högre koncentration av MBzP i norra Sverige.

    Skillnader i levnadsförhållanden av betydelse för exponering av miljöföroreningarna som beror på den åldersskillnad som fanns mellan studiepopulationerna i norr och söder, och inte undersöktes i den här studien, kan inte uteslutas. Framtida geografiska jämförelser av miljöföroreningar hos människor bör om möjligt göras på människor i samma åldersintervall.

  • 103.
    Wennberg, Maria
    et al.
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine. Yrkes- och miljömedicin.
    Lundh, Thomas
    Bergdahl, Ingvar A
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine. Yrkes- och miljömedicin.
    Hallmans, Göran
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Nutritional Research.
    Jansson, Jan-Håkan
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Medicine. Medicin.
    Stegmayr, Birgitta
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Medicine. Medicin.
    Custodio, Hipolito M
    Skerfving, Staffan
    Time trends in burdens of cadmium, lead, and mercury in the population of northern Sweden2006In: Environmental Research, ISSN 0013-9351, E-ISSN 1096-0953, Vol. 100, no 3, p. 330-338Article in journal (Refereed)
  • 104.
    Wennberg, Maria
    et al.
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Nutritional Research.
    Lundh, Thomas
    Department of Occupational and Environmental Medicine, Lund University Hospital, Lund, Sweden.
    Nilsson Sommar, Johan
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine.
    Bergdahl, Ingvar
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine.
    Time trends of lead and cadmium in the adult population of Northern Sweden 1990-20142015Report (Other academic)
  • 105.
    Wennberg, Maria
    et al.
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Nutritional Research.
    Lundh, Thomas
    Nilsson Sommar, Johan
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine.
    Bergdahl, Ingvar A.
    Umeå University, Faculty of Medicine, Department of Biobank Research. Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine.
    Time trends and exposure determinants of lead and cadmium in the adult population of northern Sweden 1990-20142017In: Environmental Research, ISSN 0013-9351, E-ISSN 1096-0953, Vol. 159, p. 111-117Article in journal (Refereed)
    Abstract [en]

    INTRODUCTION: This study follows cadmium and lead concentrations in blood in the adult population in northern Sweden over 24 years.

    MATERIAL AND METHODS: Concentrations of lead and cadmium were measured in single whole blood samples (B-Pb and B-Cd) from 619 men and 926 women participating in the Northern Sweden WHO MONICA Study on one occasion 1990-2014. Associations with smoking and dietary factors were investigated. Consumption of moose meat was asked for in 2014.

    RESULTS: In the adult population in northern Sweden, the median B-Pb in 2014 was 11.0µg/L in young (25-35 years) men and 9.69µg/L in young women. In an older age-group (50-60 years), the median B-Pb was 15.1µg/L in men and 13.1µg/L in women. B-Pb decreased from 1990 to 2009, after which time no further decrease was observed. B-Pb was higher in smokers than in non-smokers. In never-smokers, positive associations were found between B-Pb and consumption of wine and brewed coffee (women only) in 2004-2014. Higher B-Pb with consumption of moose meat was demonstrated in men, but not in women. B-Cd was essentially stable over the whole period, but an increase in B-Cd, of 3% per year, was detected in never-smoking women between 2009 and 2014. In 2014, median B-Cd in never-smokers in the four groups was; 0.11µg/L in younger men, 0.15µg/L in younger women, 0.14µg/L in older men, and 0.21µg/L in older women. B-Cd was higher in smokers than in non-smokers. The only positive association between B-Cd and food items in 2004-2014 was with consumption of brewed coffee (men only).

    CONCLUSIONS: The lack of a decrease in B-Cd from 1990 to 2014 and the absence of a further decrease in B-Pb after 2009 are unsatisfactory considering the health risks these metals pose in the general population at current concentrations.

  • 106.
    Wennberg, Maria
    et al.
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Nutritional Research.
    Ruuth, Anders
    Department of Obstetrics and Gynaecology, Sunderby Hospital, Luleå, Sweden.
    Andersson, Liselott
    Umeå University, Faculty of Medicine, Department of Clinical Sciences, Obstetrics and Gynecology. Department of Obstetrics and Gynaecology, Sunderby Hospital, Luleå, Sweden.
    Bergdahl, Ingvar A.
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine. Umeå University, Faculty of Medicine, Department of Biobank Research.
    Mercury concentrations in pregnant women in circumpolar Sweden (Kiruna)2018Report (Other academic)
    Abstract [en]

    High exposure to mercury have been found in populations living in circumpolar areas, due to high consumption of sea food and accumulation of mercury closer to the north pole. The developing fetus is especially sensitive to effects of mercury. Exposure to mercury has previously been examined in pregnant women in Sweden, but not in pregnant women residing in Sweden north of the polar circle.

    In the years 2015-2016, mercury was measured in whole blood from 51 pregnant women living in the city of Kiruna in circumpolar Sweden, taking part in an international comparison between eight circumpolar countries. This report presents the Swedish results on mercury concentrations and associations with some exposure determinants. Also, compliance to dietary advice on fish consumption, appointed to fertile women, was examined.

    The median concentration of total-Hg in whole blood was 0.40 μg/L (min, max; <0.40, 1.88) among the 51 pregnant women in Kiruna. This is similar or lower compared to concentrations of mercury in pregnant women in other parts of Sweden. None of the women in the study had concentrations of mercury that are considered as dangerous.

    Mercury concentrations were associated with total fish consumption but not to consumption of predatory fish, known to be higher in mercury. All of the women in the study had knowledge about dietary advice on fish consumption. One woman exceeded the recommended consumption of predatory fish, limited due to risk of high mercury content, but this woman did not have high concentrations of mercury. While the vast majority of women thus followed the recommendations of not eating too much polluted fish, only 15 % of the women reported sufficient fish consumption to comply with the dietary advice (2-3 times/week).

    In conclusion, pregnant women in circumpolar Sweden have low exposure to mercury, and do not deviant from pregnant women in other parts of Sweden. Knowledge about dietary advice on fish consumption appointed to fertile women is very good. The public health concern though, is that pregnant women in circumpolar Sweden do not eat enough fish.

  • 107. Wennberg, Maria
    et al.
    Stromberg, Ulf
    Bergdahl, Ingvar
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine.
    Jansson, Jan-Håkan
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Medicine.
    Kauhanen, Jussi
    Norberg, Margareta
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Epidemiology and Global Health.
    Salonen, Jukka
    Skerfving, Staffan
    Tuomainen, Tomi-Pekka
    Vessby, Bengt
    Virtanen, Jyrki
    Myocardial infarction in relation to mercury and fatty acids from fish2012In: Toxicology Letters, ISSN 0378-4274, E-ISSN 1879-3169, Vol. 211, p. S125-S125Article in journal (Refereed)
  • 108.
    Wennberg, Maria
    et al.
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine.
    Strömberg, Ulf
    Bergdahl, Ingvar A
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine.
    Jansson, Jan-Håkan
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Medicine.
    Kauhanen, Jussi
    Norberg, Margareta
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Epidemiology and Global Health.
    Salonen, Jukka T
    Skerfving, Staffan
    Tuomainen, Tomi-Pekka
    Vessby, Bengt
    Virtanen, Jyrki K
    Myocardial infarction in relation to mercury and fatty acids from fish: a risk-benefit analysis based on pooled Finnish and Swedish data in men2012In: American Journal of Clinical Nutrition, ISSN 0002-9165, E-ISSN 1938-3207, Vol. 96, no 4, p. 706-713Article in journal (Refereed)
    Abstract [en]

    Background: Exposure to methylmercury from fish has been associated with increased risk of myocardial infarction (MI) in some studies. At the same time, marine n-3 (omega-3) PUFAs are an inherent constituent of fish and are regarded as beneficial. To our knowledge, no risk-benefit model on the basis of data on methylmercury, PUFA, and MI risk has yet been presented.

    Objective: The objective of this study was to describe how exposure to both marine n-3 PUFAs and methylmercury relates to MI risk by using data from Finland and Sweden.

    Design: We used matched case-control sets from Sweden and Finland that were nested in population-based, prospective cohort studies. We included 361 men with MI from Sweden and 211 men with MI from Finland. MI risk was estimated in a logistic regression model with the amount of mercury in hair (hair-Hg) and concentrations of n-3 PUFAs (EPA and DHA) in serum (S-PUFA) as independent variables.

    Results: The median hair-Hg was 0.57 mu g/g in Swedish and 1.32 mu g/g in Finnish control subjects, whereas the percentage of S-PUFA was 4.21% and 3.83%, respectively. In combined analysis, hair-Hg was associated with higher (P = 0.005) and S-PUFA with lower (P = 0.011) MI risk. Our model indicated that even a small change in fish consumption (ie, by increasing S-PUFA by 1%) would prevent 7% of MIs, despite a small increase in mercury exposure. However, at a high hair-Hg, the modeled beneficial effect of PUFA on MI risk was counteracted by methylmercury.

    Conclusions: Exposure to methylmercury was associated with increased risk of MI, and higher S-PUFA concentrations were associated with decreased risk of MI. Thus, MI risk may be reduced by the consumption of fish high in PUFAs and low in methylmercury.

    Am J Clin Nutr 2012;96:706-13.

  • 109.
    Wennberg, Maria
    et al.
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine. Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Nutritional Research.
    Tornevi, Andreas
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine.
    Johansson, Ingegerd
    Umeå University, Faculty of Medicine, Department of Odontology, Cariology.
    Hörnell, Agneta
    Umeå University, Faculty of Social Sciences, Department of Food and Nutrition.
    Norberg, Margareta
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Epidemiology and Global Health. Umeå University, Faculty of Social Sciences, Centre for Population Studies (CPS).
    Bergdahl, Ingvar A
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine.
    Diet and lifestyle factors associated with fish consumption in men and women: a study of whether gender differences can result in gender-specific confounding2012In: Nutrition Journal, ISSN 1475-2891, E-ISSN 1475-2891, Vol. 11, p. 101-Article in journal (Refereed)
    Abstract [en]

    BACKGROUND: Fish consumption and intake of omega-3 fatty acids from fish are associated with a lower risk of cardiovascular disease. However, a prospective study from northern Sweden showed that high consumption of fish is associated with an increased risk of stroke in men, but not in women. The current study aimed to determine if fish consumption is differently related to lifestyle in men compared with women in northern Sweden.

    METHODS: Lifestyle information on 32,782 men and 34,866 women (aged 30--60 years) was collected between 1992 and 2006 within the Vasterbotten Intervention Programme (a health intervention in northern Sweden). Spearman correlation coefficients (Rs) were calculated for associations between self-reported consumption of fish and other food items or lifestyle variables.

    RESULTS: Fish consumption was positively associated with other foods considered healthy (e.g., root vegetables, lettuce/cabbage/spinach/broccoli, chicken, and berries; Rs = 0.21-0.30), as well as with other healthy lifestyle factors (e.g., exercise and not smoking) and a higher educational level, in both men and women. The only gender difference found, concerned the association between fish consumption and alcohol consumption. Men who were high consumers of fish had a higher intake of all types of alcohol compared with low to moderate fish consumers. For women, this was true only for wine.

    CONCLUSIONS: Except for alcohol, the association between fish consumption and healthy lifestyle did not differ between men and women in northern Sweden. It is important to adjust for other lifestyle variables and socioeconomic variables in studies concerning the effect of fish consumption on disease outcome.

  • 110.
    Werneke, Ursula
    et al.
    Umeå University, Faculty of Medicine, Department of Clinical Sciences, Psychiatry. Department of Psychiatry, Sunderby Hospital, Luleå, Sweden.
    Bergdahl, Ingvar A.
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine.
    Diet, environment and mental health2018In: Oxford Textbook of Public Mental Health / [ed] Bhugra D., Bhui K., Wong S., Gilman S., Oxford: Oxford University Press, 2018, p. 441-457Chapter in book (Refereed)
    Abstract [en]

    This chapter reviews dietary and environmental factors that may affect mental health. It takes a public health angle but examines the individual patient perspective where relevant. In the first part, the chapter looks at the impact of various nutritional constituents on mental health, including omega-3 fatty acids, vitamins, and minerals. Then, it reviews the evidence for diets and ‘superfoods’, which people might try to improve their mental health. Here, the focus is on neurodevelopmental disorders, depression, and psychosis. Potential interactions between foodstuffs and psychotropic medicines are also explored. The final part concerns environmental toxins that populations may be exposed to that may affect mental health, including lead, methylmercury, and various organic compounds.

  • 111. Wu, Xunwei
    et al.
    Liang, Yihuai
    Umeå University, Faculty of Medicine, Public Health and Clinical Medicine, Occupational and Enviromental Medicine.
    Jin, Taiyi
    Umeå University, Faculty of Medicine, Public Health and Clinical Medicine, Occupational and Enviromental Medicine.
    Ye, Tingting
    Kong, Qinghu
    Wang, Zaijuan
    Lei, Lijian
    Bergdahl, Ingvar A
    Umeå University, Faculty of Medicine, Public Health and Clinical Medicine, Occupational and Enviromental Medicine.
    Nordberg, Gunnar F
    Umeå University, Faculty of Medicine, Public Health and Clinical Medicine, Occupational and Enviromental Medicine.
    Renal effects evolution in a Chinese population after reduction of cadmium exposure in rice.2008In: Environmental research, ISSN 1096-0953, Vol. 108, no 2, p. 233-8Article in journal (Refereed)
    Abstract [en]

    Cadmium is a well-known nephrotoxic agent with extremely long biological half-time of 10-30 years in human. To investigate the evolution of cadmium-induced renal effects in the population, a number of 148 residents who lived in cadmium-polluted area were followed-up for 3 years after the reduction of cadmium exposure in rice. Urinary cadmium (UCd), beta(2)-microglobulin (B2M) and albumin (ALB) were analyzed in 1995 and 1998, respectively. The results demonstrated that the changes of renal effects of residents depended on the levels of UCd before inflow of cadmium to human body declined. In cases where UCd were less than 10 microg/g creatinine in 1995, evidence was found indicating significant decreases in proteinuria (i.e., B2M and ALB) 3 years later, whereas, in cases where the excretion of UCd exceeded 10 microg/g creatinine in 1995, progression was observed. The study of dose-response relationships between UCd and B2M or ALB also showed that the cadmium-induced renal dysfunction might be reversible if UCd concentration was low-level before exposure decreasing, otherwise it might be irreversible or aggravated.

  • 112. Zheng, Guang
    et al.
    Tian, Liting
    Liang, Yihuai
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine.
    Broberg, Karin
    Lei, Lijian
    Guo, Weijun
    Nilsson, Johan
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine.
    Bergdahl, Ingvar A
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine.
    Skerfving, Staffan
    Jin, Taiyi
    δ-Aminolevulinic acid dehydratase genotype predicts toxic effects of lead on workers' peripheral nervous system2011In: Neurotoxicology, ISSN 0161-813X, E-ISSN 1872-9711, Vol. 32, no 4, p. 374-382Article in journal (Refereed)
    Abstract [en]

    There is a wide variation in sensitivity to lead (Pb) exposure, which may be due to genetic susceptibility towards Pb. We investigated whether a polymorphism (rs1800435) in the δ-aminolevulinic acid dehydratase (ALAD) gene affected the toxicokinetics and toxicodynamics of Pb. Among 461 Chinese Pb-exposed storage battery and 175 unexposed workers, allele frequencies for the ALAD1 and ALAD2 alleles were 0.968 and 0.032, respectively. The Pb-exposed workers had a higher fraction of the ALAD1-2/2-2 genotype than unexposed workers (7.8% vs. 2.3%, p=0.01). The Pb levels in blood (B-Pb) and urine (U-Pb) were higher in Pb-exposed workers carrying the ALAD2 allele compared to homozygotes for ALAD1 (median B-Pb: 606 vs. 499 μg/L; U-Pb: 233 vs. 164 μg/g creatinine), while there was no statistically significant difference in the unexposed controls (median: 24 vs. 37 μg/L, and 3.9 vs. 6.4μg/g creatinine, respectively). High B-Pb and U-Pb were associated with statistically significantly lower sensory and motor conduction velocities in the median, ulnar and peroneal nerves. At the same B-Pb and U-Pb, ALAD1 homozygotes had lower conduction velocities than the ALAD2 carriers. There were similar trends for toxic effects on haem synthesis (zinc protoporphyrin and haemoglobin in blood) and renal function (albumin and N-acetyl-d-β-acetylglucosaminidase in urine), but without statistical significance. There was no difference in Pb toxicokinetics and toxicodynamics associated with VDR BsmI polymorphism. Our results show that the ALAD genotype modifies the relationship between Pb and its toxic effects on the peripheral nervous system. This must be considered in the assessment of risks at Pb exposure.

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