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Coffee reduces the risk of dementia, here's how many cups you should drink during the day

2026-02-17 18:04:12Lifestyle SHKRUAR NGA REDAKSIA VOX
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A study by experts at Harvard University found that people who consume two to three caffeinated coffees a day have a lower chance of developing dementia than people who do not consume it.

According to Yu Zhang, from the Harvard University School of Public Health, dementia is one of the most challenging and widespread health problems worldwide, and there are still very limited effective treatments.

Researchers examined data from 86,000 female nurses and 45,000 men working as health professionals in the US, who were monitored for an average of 43 years.

It is known that during the follow-up period, 11,033 cases of dementia were identified and that questionnaires regarding their diet were completed every two to four years, including questions about the consumption of caffeinated coffee, decaffeinated coffee and tea.

On the other hand, decaffeinated coffee consumption was not associated with a lower risk of dementia, compared to caffeinated coffee drinkers, for whom the analysis found they had an 18% lower risk of developing dementia, as well as tea drinkers, with a 16% lower risk.

According to Dr. Susan Kohlhaas, executive director of research at Alzheimer's Research UK, this research does not prove that coffee and tea protect the brain.

"This study shows an association, not a cause-and-effect relationship. People who drink coffee or tea may have an impact on brain health," she said.

On the other hand, Prof. Tara Spires-Jones, division head at the Dementia Research Institute in the UK, said: “This type of observational research cannot definitively prove that caffeine intake was the reason for the lower risk of dementia. For example, sleep disruption and some cardiovascular health factors are associated with increased risk of dementia and these may influence people’s choices about caffeine intake.”


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