"The results paint a clear picture: People with a habit of drinking two to three cups of coffee or one to two cups of tea on a daily basis demonstrated a lower risk of dementia compared to their less caffeinated peers. People who drank up to five cups of coffee had around 20 percent less risk of dementia, while those who drank one or more cups of tea showed 15 percent less of developing the neurodegenerative condition."
"Decaf coffee wasn't linked to the same benefits, according to the new research. Caffeine is the key ingredient that appears to be providing some protection from cognitive decline for coffee and tea drinkers, possibly through its ability to reduce inflammation in the brain. The molecule we rely on to wake us up in the morning has also shown promise in reducing insulin sensitivity and lowering the risk of type 2 diabetes - a big risk factor for age-related cognitive decline."
A longitudinal cohort of around 130,000 people was followed for more than 40 years, collecting behavioral and health information. Regular consumption of two to three cups of coffee or one to two cups of tea daily correlated with lower dementia risk. Drinking up to five cups of coffee correlated with about 20 percent lower dementia risk, while one or more cups of tea correlated with about 15 percent lower risk. Decaffeinated coffee did not show the same association. Caffeine may reduce brain inflammation and improve insulin sensitivity, and coffee and tea contain bioactive compounds offering antioxidant, vascular, relaxation, and neuroprotective effects.
Read at Fast Company
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