{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,13]],"date-time":"2026-02-13T14:24:48Z","timestamp":1770992688795,"version":"3.50.1"},"reference-count":36,"publisher":"BMJ","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Occup Environ Med"],"accepted":{"date-parts":[[2010,7,28]]},"published-print":{"date-parts":[[2011,4]]},"abstract":"<jats:sec><jats:title>Objectives<\/jats:title><jats:p>Sunlight is the main contributor to vitamin D in humans. Since inadequate levels of vitamin D have been linked to increased risks for neurodegenerative diseases, we examined whether outdoor work is associated with a reduced risk for Parkinson's disease in a population-based case\u2013control study of Danish men.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>We identified 3819 men with a primary diagnosis of Parkinson's disease in the period 1995\u20132006 in the Danish National Hospital Register and selected 19\u2008282 age- and sex-matched population controls at random from the Central Population Register. Information on work history was ascertained from the Danish Supplementary Pension Fund and the Central Population Register. Based on trade grouping codes and job titles, we evaluated the extent of outdoor work of study subjects as a proxy of exposure to sunlight.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Relying on trade grouping codes, we estimated ORs for study subjects with moderate, frequent and maximal outdoor work compared with exclusive indoor work of 0.90 (95% CI 0.78 to 1.02), 0.86 (95% CI 0.75 to 0.99) and 0.72 (95% CI 0.63 to 0.82), respectively, for Parkinson's disease. Reduced risks were also found for Parkinson's disease among outdoor workers based on study subjects' job titles.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Our findings suggest that men working outdoors have a lower risk for Parkinson's disease. Further studies of measured vitamin D levels in outdoor workers are warranted to clarify a potential inverse association between vitamin D and the risk for Parkinson's disease.<\/jats:p><\/jats:sec>","DOI":"10.1136\/oem.2010.057448","type":"journal-article","created":{"date-parts":[[2010,10,1]],"date-time":"2010-10-01T02:29:09Z","timestamp":1285900149000},"page":"273-278","source":"Crossref","is-referenced-by-count":39,"title":["Outdoor work and risk for Parkinson's disease: a population-based case\u2013control study"],"prefix":"10.1136","volume":"68","author":[{"given":"Line","family":"Kenborg","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Christina F","family":"Lassen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Beate","family":"Ritz","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eva S","family":"Schernhammer","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Johnni","family":"Hansen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nicole M","family":"Gatto","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"J\u00f8rgen H","family":"Olsen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2010,9,30]]},"reference":[{"key":"2024052300370639000_68.4.273.1","doi-asserted-by":"publisher","DOI":"10.1136\/oem.2006.027003"},{"key":"2024052300370639000_68.4.273.2","doi-asserted-by":"publisher","DOI":"10.1186\/1471-2377-8-6"},{"key":"2024052300370639000_68.4.273.3","doi-asserted-by":"crossref","first-page":"600","DOI":"10.1038\/ncpneuro0924","article-title":"Mitochondrial biology and oxidative stress in Parkinson disease pathogenesis","volume":"4","author":"Henchcliffe","year":"2008","journal-title":"Nat Clin Pract Neurol"},{"key":"2024052300370639000_68.4.273.4","doi-asserted-by":"publisher","DOI":"10.1001\/archinte.168.15.1629"},{"key":"2024052300370639000_68.4.273.5","unstructured":"Grant WB . 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