Stroke diet: How many daily cups of tea or coffee could reduce the risk of a stroke?

A recent study conducted by Yuan Zhang and colleagues from Tianjin Medical University, China revealed that people who drank tea and coffee were less likely to suffer from a stroke. The study lasted for more than a decade and followed the lives of 365,000 people aged between 50 and 74.

Writing in the journal PLOS Medicine, the authors said: “Our findings suggested that moderate consumption of coffee and tea separately or in combination were associated with lower risk of stroke and dementia.”

The health benefits of coffee and tea are thought to go beyond just their caffeine content.

Dr Scott Kaiser, director of Geriatric Cognitive Health for the Pacific Neuroscience Institute at Providence Saint John’s Health Center in Santa Monica, California told Healthline that antioxidants were also at play.

He said: “While caffeine is certainly a key common denominator, coffee and tea are both derived from plants with many, many potentially beneficial chemical compounds, including powerful antioxidants.

“An extensive and growing body of research demonstrates the brain health benefits of certain foods — especially those rich in antioxidants and other ‘neuroprotective’ compounds.”

Despite their findings, though, the experts added that the participants were a “healthy sample” and may not reflect the entire population accurately.

The findings suggest that tea and coffee can be beneficial, but they can not be used as a cure-all.

Professor Tara Spires-Jones, head of the UK Dementia Research Institute programme and deputy director of the Centre for Discovery Brain Sciences at the University of Edinburgh, who was not involved in the study, said that more needs to be done to understand the links between tea and coffee consumption and strokes.

Some experts have also pointed out that drinking too much tea and coffee can actually have the opposite effect.

Profession Kevin McConway, an emeritus professor of applied statistics at the Open University, was not involved in the study.

However, when commenting on the findings, he suggested that in some cases drinking too much of the beverages may even increase risk.

He said: “Once the coffee consumption got up to seven or eight cups a day, the stroke risk was greater than for people who drank no coffee, and quite a lot higher than for those who drank two or three cups a day.”

According to the NHS: “The best way to help prevent a stroke is to eat a healthy diet, exercise regularly, and avoid smoking and drinking too much alcohol.”



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