title: Dietary intake of minerals and the risk of ischemic stroke in Guangdong Province, China, 2007-2008.
abstract: BACKGROUND
  Previous studies have investigated the association between mineral intake and the risk of ischemic stroke, but results are inconsistent. We conducted a case-control study to ascertain the associations between intake of dietary potassium, calcium, magnesium, sodium, and iron and the ischemic stroke risk in the southern Chinese population.
  
  
  METHODS
  Information on lifestyle and typical food consumption was obtained from 374 hospital inpatients with ischemic stroke and 464 hospital-based control patients. Added sodium from salt or soy sauce could not be reliably quantified, but participants were asked to characterize their diet as low in salt, normal, or high in salt. Logistic regression analyses were performed to assess possible associations between the effects of mineral intake and ischemic stroke risk.
  
  
  RESULTS
  The mean weekly intakes of potassium, calcium, magnesium, and iron were lower among case patients than among control patients. Sodium was an exception. Lower stroke risk was associated with higher weekly dietary calcium or magnesium levels (adjusted odds ratio, 0.32) for the highest versus lowest category of intake, and significant dose-response relationships were seen. No significant associations were found for potassium, iron, or sodium. However, patients who consumed a salty diet were more than twice as likely as those whose diet was light in salt to experience an ischemic stroke.
  
  
  CONCLUSIONS
  The findings suggest that lowering sodium intake while maintaining high levels of dietary calcium and magnesium may help prevent ischemic stroke in southern Chinese adults.
authors.affiliation: Curtin University of Technology, School of Public Health and National Drug Research Institute, Perth, Western Australia, Australia.
authors.forename: Wenbin
authors.initials: W
authors.lastname: Liang
authors.forename: Andy H
authors.initials: AH
authors.lastname: Lee
authors.forename: Colin W
authors.initials: CW
authors.lastname: Binns
mesh_terms: D000368:Aged; D002545:Brain Ischemia / Q000453:epidemiology / Q000209:etiology*; D016022:Case-Control Studies; D002681:China / Q000453:epidemiology; D003625:Data Collection; D004032:Diet; D005247:Feeding Behavior; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008903:Minerals; D020521:Stroke / Q000453:epidemiology / Q000209:etiology*; D011795:Surveys and Questionnaires
chemical_list: D008903:Minerals