Daily 2-3 Cups of Coffee May Cut Dementia Risk by 35%, Reveals 43-Year Study

Starting your day with a hot cup of coffee could be a boon for brain health, as a landmark long-term study has found that consuming two to three cups daily significantly lowers the risk of dementia.

The research, tracking over 131,000 nurses and healthcare professionals in the US for 43 years, showed the strongest benefits in people under 75, with moderate caffeine intake (250-300mg) linked to a 35% reduced dementia likelihood compared to non-consumers.

Scientists explain that caffeine blocks adenosine, a brain chemical that slows dopamine activity, while coffee’s antioxidants reduce inflammation and prevent amyloid plaques, the key culprits in Alzheimer’s disease; tea offers similar protective effects. The study also noted that decaffeinated coffee showed no such benefits and even trended toward faster memory decline.

A key caution: excess caffeine beyond moderation can disrupt sleep and heighten anxiety, per the Yerkes-Dodson law, negating gains. Sticking to 2-3 fresh cups daily remains the optimal strategy for long-term cognitive protection.