Tea and coffee consumption linked to significantly reduced risk of stroke and dementia

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Recent research has linked drinking tea and coffee to a significantly reduced risk of stroke and dementia. Consumption of the latter is also associated with a lower risk of developing post-stroke dementia.

A large cohort

The stroke and the dementia are widespread conditions, which represent a heavy economic and social burden. It is estimated that Stroke are responsible for more than 10% of annual deaths worldwide, and these can trigger dementia in survivors. In the context of work published in the journal PLoS Medicine, researchers fromTianjin Medical University studied the link between the consumption of café and of thé, separately and in combination, and the risk of developing these diseases.

The study of 365,682 members of the UK Biobank (aged 50 to 74), recruited between 2006 and 2010 and followed until 2020, suggested that these two beverages had very beneficial effects on health.

Participants 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 dementia or stroke. Compared to subjects who did not drink, those who drank 2-3 cups of coffee and 2-3 cups of tea per day had a 32% and 28% lower risk of stroke and dementia risk, respectively. . Consumption of coffee alone, or in combination with tea, has also been shown to significantly reduce the risk of post-dementia.Stroke.

Research to be deepened

The researchers point out that the UK Biobank reflects a relatively healthy sample compared to the general population. A fairly small number of subjects who developed Stroke (10,053) or dementia (5,079) in the cohort studied, extrapolating these results could prove difficult.

« While it can be inferred that coffee and tea protect against strokes, dementia and post-stroke dementia, no clear causal link has yet been established. ”, Underline the authors of the study. “ More research is needed to comprehensively assess the effects of these drinks on physical and mental health. »

A few months ago, a pioneering study identified the main mechanism by which tea reduced high blood pressure, promising to improve the treatment of this chronic condition.


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