HealthDay News — Coffee and tea consumption separately and in combination are associated with a reduced risk for developing stroke and dementia, according to a study published in PLOS Medicine.
Yuan Zhang, from Tianjin Medical University in China, and colleagues examined the correlations of coffee and tea consumption with the risk for developing stroke and dementia in a study involving 365,682 participants aged 50 to 74 years from the UK Biobank.
The researchers found that 5079 participants developed dementia and 10,053 developed stroke during a median follow-up of 11.4 years. There were nonlinear associations for coffee and tea with stroke and dementia; the lowest hazard ratio for incident stroke and dementia was seen for coffee intake of 2 to 3 cups/day, tea intake of 3 to 5 cups/day, or a combined intake of 4 to 6 cups/day. Drinking 2 to 3 cups of coffee and 2 to 3 cups of tea per day was associated with a significantly lower risk for stroke and dementia compared with not drinking tea and coffee (hazard ratios, 0.68 and 0.72, respectively). A lower risk for ischemic stroke and vascular dementia was seen for the combination of tea and coffee consumption. The combination also correlated with a lower risk for poststroke dementia, with the lowest risk seen for daily consumption of 3 to 6 cups of coffee and tea (hazard ratio, 0.52).
“Whether the provision of such information can improve stroke and dementia outcomes remains to be determined,” the authors write.