{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,8]],"date-time":"2025-10-08T15:39:03Z","timestamp":1759937943795},"reference-count":33,"publisher":"BMJ","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Occup Environ Med"],"published-print":{"date-parts":[[2007,2]]},"abstract":"<jats:p><jats:bold>Background:<\/jats:bold>Several studies point to a potential aetiological relevance to dementia of exposure to low-frequency magnetic fields, but the evidence is inconclusive.<\/jats:p><jats:p><jats:bold>Objective:<\/jats:bold>To further examine the relationship between low frequency magnetic fields and dementia.<\/jats:p><jats:p><jats:bold>Methods:<\/jats:bold>From 23 general practices, 195 patients with dementia were recruited. Of these, 108 had possible Alzheimer\u2019s disease, 59 had possible vascular dementia and 28 had secondary or unclassified dementia. A total of 229 controls were recruited: 122 population controls and 107 ambulatory patients free from dementia. Data were gathered in a structured personal interview; in cases, the interview was administered to the next of kin. Exposure to low-frequency electromagnetic fields was assessed by expert rating. To identify occupations suspected to be associated with dementia, major occupations were a priori formed. Odds ratios were calculated using logistic regression, to control for age, region, sex, dementia in parents and smoking.<\/jats:p><jats:p><jats:bold>Results:<\/jats:bold>Exposure to magnetic fields was not significantly associated with dementia; restriction of the analysis to cases with possible Alzheimer\u2019s disease or possible vascular dementia did not lead to statistically significant results. We found an increased risk of dementia in blue-collar occupations (electrical and electronics workers, metal workers, construction workers, food and beverage processors and labourers).<\/jats:p><jats:p><jats:bold>Conclusions:<\/jats:bold>Our study does not support a strong association between occupational exposure to low-frequency magnetic fields and dementia. 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