A study published in the open-access journal PLOS Medicine shows that drinking coffee or tea may lower the risk of stroke and dementia. Coffee consumption was associated with a lower risk of dementia.
10 percent of deaths worldwide are caused by strokes. Dementia is a global health concern with a high economic and social burden and is related to symptoms of decline in brain function. Symptoms of dementia occur after a stroke.
A group of people from the UK Biobank were recruited between 2006 and 2010 and followed until 2020. Participants self- reported their coffee and tea intake. Over the course of the study period, 10,053 participants experienced at least one stroke.
The lowest incidence of stroke or dementia was found in people who drank 3-6 cups of coffee and tea a day. People who drank 2 cups of coffee and 2 cups of tea daily had a 32% lower risk of stroke and a 28% lower risk of dementia. Coffee alone or in combination with tea was associated with a lower risk of dementia.
The sample in the UK Biobank is relatively healthy and could restrict the ability to generalize. It can be difficult to estimate rates accurately due to the fact that relatively few people developed dementia or stroke. Coffee and tea consumption may be protective against stroke, dementia and post-stroke dementia, but causality cannot be inferred from the associations.
The authors said that their findings showed that moderate consumption of coffee and tea separately or in combination was associated with lower risk of stroke and dementia.
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Journal reference
Shu Li, Wei-dong Li, and Yaogang Wang are all related. Coffee and tea consumption is associated with a higher risk of stroke, dementia, and poststroke dementia. The 18th edition of the journal PLOS Medicine was published in 2021.
