The consumption of caffeine, specifically through coffee and green tea, has been observed in the daily routines of residents across four of the five Blue Zones, regions known for their high concentration of centenarians. The habit has been linked to potential health benefits, including a lower risk of various chronic diseases, such as neurological disorders, type 2 diabetes, cardiovascular disease, and certain types of cancers. However, the key to these benefits may not just be in the consumption of caffeine, but also in the method and social context of its consumption.
  

Key Points: 

1. Caffeine, in the form of coffee and green tea, is consumed regularly by residents of four of the five Blue Zones, regions with the highest concentrations of centenarians.
2. Coffee and green tea are believed to reduce the risk of several chronic diseases like Alzheimer’s, asthma, liver disease, type 2 diabetes, cardiovascular disease, and certain types of cancers.
3. In Costa Rica’s Blue Zone, residents often dilute their coffee, consuming it throughout the day to gently stimulate their system without causing anxiety or jitters.
4. In Greece and Italy’s Blue Zones, residents enjoy their caffeine in the company of others, strengthening their social support systems, which are also vital for longevity.
5. In Okinawa, Japan, another Blue Zone, residents regularly consume green tea, which is rich in antioxidants and believed to lower the risk of several diseases.
6. Despite the health benefits associated with caffeine, consumption should be moderate, and it is not necessary to incorporate it into one’s diet if it doesn’t suit them. Healthy longevity is influenced by a combination of factors, including a balanced diet, regular physical activity, and strong social support systems.

Source: https://www.wellandgood.com/blue-zones-caffeine-habits/