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Dietary Intake of α-Linolenic Acid Is Not Appreciably Associated with Risk of Ischemic Stroke among Middle-Aged Danish Men and Women

Bork, Christian S ; Venø, Stine K ; Lundbye - Christensen, Søren ; Jakobsen, Marianne U ; Tjønneland, Anne ; Schmidt, Erik B ; Overvad, Kim

The Journal of Nutrition, 2018, Vol. 148(6), pp.952-958 [Peer Reviewed Journal]

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  • Title:
    Dietary Intake of α-Linolenic Acid Is Not Appreciably Associated with Risk of Ischemic Stroke among Middle-Aged Danish Men and Women
  • Author/Creator: Bork, Christian S ; Venø, Stine K ; Lundbye - Christensen, Søren ; Jakobsen, Marianne U ; Tjønneland, Anne ; Schmidt, Erik B ; Overvad, Kim
  • Subjects: Alpha - Linolenic Acid ; Omega - 3 Fatty Acids ; Ischemic Stroke ; Cohort Study ; Diet
  • Is Part Of: The Journal of Nutrition, 2018, Vol. 148(6), pp.952-958
  • Description: Background: Intake of the plant-derived omega-3 (n-3) fatty acid a-linolenic acid (ALA) may reduce the risk of ischemic stroke. Objective: We have investigated the associations between dietary intake of ALA and the risk of ischemic stroke and ischemic stroke subtypes. Methods: This was a follow-up study. A total of 57,053 participants aged 50-64 y were enrolled into the Danish Diet, Cancer and Health cohort between 1993 and 1997. Intake of ALA was assessed by a validated semiquantitative food frequency questionnaire. Potential incident cases of ischemic stroke were identified in the Danish National Patient Register, validated, and classified into subtypes based on assumed etiology. Statistical analyses were performed via Cox proportional hazard regression with adjustment for established ischemic stroke risk factors. Results: A total of 1859 ischemic stroke cases were identified during a median of 13.5 y of follow-up. In multivariate analyses using restricted cubic splines adjusting for traditional risk factors for ischemic stroke, we observed no clear associations between dietary intake of ALA and the risk of total ischemic stroke or any of its subtypes including ischemic stroke due to large artery atherosclerosis, ischemic stroke due to small-vessel occlusion, and ischemic stroke due to cardio-embolism. Conclusion: Dietary intake of ALA was neither consistently nor appreciably associated with the risk of ischemic stroke or ischemic stroke subtypes among middle-aged Danish men and women. This study was registered at clinicaltrials.gov as NCT03258983. Keywords: alpha-linolenic acid, omega-3 fatty acids, ischemic stroke, cohort study, diet doi: https://doi.org/10.1093/jn/nxy056.
  • Identifier: ISSN: 0022-3166 ; E-ISSN: 1541-6100 ; DOI: 10.1093/jn/nxy056