Researchers found that tea and coffee consumption was associated with lower dementia and stroke risk. The study looked at 365,682 individuals aged 50-74 years old, and found that people who drank 2-3 cups of coffee or 3-5 cups of tea per day, or a combination of 4-6 of coffee and tea, had the lowest incidence of dementia and stroke. Tea and coffee drinkers had a 32 percent lower risk of stroke and 28 percent lower risk of dementia. Read more.