This Surprising Daily Habit Could Cut Dementia Risk by 35%

131,821 American nurses and healthcare professionals were followed for up to 43 years; 11,033 were diagnosed with dementia.

Regular consumption of caffeinated beverages was linked to lower dementia risk compared with little or no caffeinated beverage consumption.

About 250–300 mg of caffeine per day (roughly 2–3 cups of coffee) was associated with around a 35% lower dementia risk in people aged 75 and under.

Increasing caffeine intake beyond 250–300 mg per day did not further reduce dementia risk.

Decaffeinated coffee was associated with faster memory decline; researchers suggest caffeine might protect the brain by blocking adenosine.