Key Highlights
- Study involved more than 132,000 healthy adults over 40 years.
- Habitual coffee or tea drinkers had a 15-20% lower risk of dementia.
- Caffeinated beverages were linked to slower cognitive decline.
- One to three cups of coffee or one to two cups of tea daily were beneficial.
- The study does not suggest non-drinkers should start consuming caffeine.


