Coffee and tea may help keep the mind sharp as we grow older.  

A recent research paper published in a major medical journal examined how regular consumption of these drinks affects brain health.  

The study followed almost 132, 000 people for an average of 37 years, tracking their coffee or tea habits and how well their brains performed over time.  

The main finding was that drinking a moderate amount of caffeinated coffee—two to three cups each day—or tea—one to two cups per day—was linked with a lower chance of developing dementia.  

Those who enjoyed the highest amounts of caffeinated coffee showed an 18 % reduction in dementia risk compared to people who rarely drank it.  

They also performed better on cognitive tests, with only a 7. 8 % decline in scores versus 9. 5 % for those who drank little or none.  

The same pattern appeared for caffeinated tea, but not for decaffeinated coffee, suggesting that caffeine itself may play a key role.  

Interestingly, drinking more than the moderate amount did not lead to extra benefits or harm; the protective effect seemed stable across a range of intake levels.  

Researchers also looked at genetics, comparing people with high or low inherited risk for dementia.  

Coffee and caffeine seemed to help both groups equally, implying that the drinks’ benefits do not depend on genetic background.  

While these results are encouraging, scientists cautioned that the effect is modest and should be seen as one small part of a larger strategy for brain health.  

Other proven approaches—such as regular exercise, healthy eating, and mental stimulation—remain essential for preserving cognition.  

Overall, the evidence supports including a cup or two of coffee or tea in daily life as part of a balanced routine to support brain function as we age.

Brain Boost: How a Daily Cup Can Slow Aging

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