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SPECIALITY



        Coffee and tea drinking may


        be associated with reduced



        rates of stroke and dementia




        Intake of 4-6 total cups daily was associated with lowest risks


              rinking coffee or tea may
              be associated with a lower
       Drisk of stroke and dementia,
        according to a study of healthy
        individuals aged 50-74 publishing
        Nov. 16 in the open-access journal
        PLOS Medicine. Drinking coffee
        was also associated with a lower
        risk of post-stroke dementia.

        Strokes are life-threatening events
        which cause 10 percent of deaths
        globally. Dementia is a general term
        for symptoms related to decline in
        brain function and is a global health
        concern with a high economic and
        social burden. Post-stroke dementia
        is a condition where symptoms of
        dementia occur after a stroke.

        Yuan Zhang and colleagues from
        Tianjin Medical University, Tianjin,
        China studied 365,682 participants
        from the UK Biobank, who were
        recruited between 2006 and 2010
        and followed them until 2020. At
        the outset participants self-reported
        their coffee and tea intake. Over    associated with lower risk of post-  suggested that moderate
        the study period, 5,079 participants   stroke dementia.                  consumption of coffee and tea
        developed dementia and 10,053                                            separately or in combination were
        experienced at least one stroke.     The UK Biobank reflects a relatively   associated with lower risk of stroke
                                             healthy sample relative to the      and dementia.”
        People who drank 2-3 cups of         general population which could
        coffee or 3-5 cups of tea per day,   restrict the ability to generalize   Story Source:
        or a combination of 4-6 cups of      these associations. Also, relatively   Materials provided by PLOS. Note:
        coffee and tea had the lowest        few people developed dementia or    Content may be edited for style and
        incidence of stroke or dementia.     stroke which can make it difficult   length.
        Individuals who drank 2-3 cups of    to extrapolate rates accurately to
        coffee and 2-3 cups of tea daily     larger populations. Finally, while   Journal Reference:
        had a 32% lower risk of stroke       it’s possible that coffee and tea   1. Yuan Zhang, Hongxi Yang, Shu
        (HR, 0.68, 95% CI, 0.59-0.79; P      consumption might be protective     Li, Wei-dong Li, Yaogang Wang.
        <0.001) and a 28% lower risk of      against stroke, dementia and post-  Consumption of coffee and tea and
        dementia (HR, 0.72, 95% CI, 0.59-    stroke dementia, this causality     risk of developing stroke, dementia,
        0.89; P =0.002) compared with        cannot be inferred from the         and poststroke dementia: A cohort
        those who drank neither coffee       associations.                       study in the UK Biobank. PLOS
        nor tea. Intake of coffee alone or                                       Medicine, 2021; 18 (11): e1003830
        in combination with tea was also     The authors add, “Our findings      DOI: 10.1371/journal.pmed.1003830




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