A significant study led by Harvard University and the Massachusetts Institute of Technology (MIT) has found that consumption of coffee could play a role in reducing the risk of dementia. The research, which tracked over 131,000 individuals over more than 40 years, showed that those who drink two to three cups of coffee per day experienced approximately a 20% lower risk of developing dementia compared to non-coffee drinkers. The findings suggest that moderate coffee consumption might be an effective strategy against cognitive decline in older adults.

In addition to coffee, the study also noted that one or two cups of caffeinated tea per day could have a similar protective effect against dementia. However, researchers caution that exceeding this amount of caffeine may not confer additional benefits, possibly due to the body's limited capacity to process caffeine at higher doses. Interestingly, the study did not report negative effects associated with higher caffeine intake, despite existing literature suggesting potential issues like sleep disturbances and heightened anxiety when consumed in excess.

The lead researcher emphasized that drinking coffee or caffeinated tea should be viewed as just one element among various lifestyle choices that contribute to cognitive health. This study adds to the growing body of evidence suggesting that lifestyle factors, including dietary choices, play a critical role in maintaining cognitive function and fighting neurodegenerative diseases. As such, further investigation into holistic approaches to supporting brain health remains essential.