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

Date:
November 16, 2021
Source:
PLOS
Summary:
Drinking coffee or tea may be associated with a lower risk of
stroke and dementia, according to a new study. Drinking coffee
was also associated with a lower risk of post-stroke dementia.



FULL STORY ========================================================================== Drinking coffee or tea may be associated with a lower risk 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
the study period, 5,079 participants developed dementia and 10,053
experienced at least one stroke.

People who drank 2-3 cups of coffee or 3-5 cups of tea per day, or a combination of 4-6 cups of coffee and tea had the lowest incidence of
stroke or dementia. Individuals who drank 2-3 cups of coffee and 2-3
cups of tea daily had a 32% lower risk of stroke (HR, 0.68, 95% CI,
0.59-0.79; P <0.001) and a 28% lower risk of dementia (HR, 0.72, 95%
CI, 0.59-0.89; P =0.002) compared with those who drank neither coffee
nor tea. Intake of coffee alone or in combination with tea was also
associated with lower risk of post-stroke dementia.

The UK Biobank reflects a relatively healthy sample relative to the
general population which could restrict the ability to generalize these associations.

Also, relatively few people developed dementia or stroke which can make it difficult to extrapolate rates accurately to larger populations. Finally,
while it's possible that coffee and tea consumption might be protective
against stroke, dementia and post-stroke dementia, this causality cannot
be inferred from the associations.

The authors add, "Our findings suggested that moderate
consumption of coffee and tea separately or in combination
were associated with lower risk of stroke and dementia." ========================================================================== Story Source: Materials provided by PLOS. Note: Content may be edited
for style and length.


========================================================================== Journal Reference:
1. Yuan Zhang, Hongxi Yang, Shu Li, Wei-dong Li, Yaogang
Wang. Consumption
of coffee and tea and risk of developing stroke, dementia,
and poststroke dementia: A cohort study in the UK Biobank. PLOS
Medicine, 2021; 18 (11): e1003830 DOI: 10.1371/journal.pmed.1003830 ==========================================================================

Link to news story: https://www.sciencedaily.com/releases/2021/11/211116144813.htm

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