Elderly people on the Aegean island of Ikaria, which is forty miles off the coast of Turkey, spend most mornings waiting for a small copper pot to nearly boil. We refer to the pot as a briki. The coffee inside is so finely ground that it resembles dark dust. Kaimaki, a thick foam, slowly rises to the rim. The pot is removed from the heat when it reaches the top. After carefully pouring the coffee and preserving the foam on top, the cup is left for two minutes to allow the sediment to sink. This process is not hurried. Rushing anything on Ikaria doesn’t seem to be of much interest to anyone.
| Detail | Information |
|---|---|
| Study Name | The Ikaria Study |
| Published In | Vascular Medicine (SAGE Publications), April 2013 |
| Lead Researcher | Dr. Gerasimos Siasos, University of Athens Medical School |
| Study Location | Island of Ikaria, Greece |
| Participants | 142 elderly subjects aged 66–91 years |
| Key Finding | Boiled Greek coffee consumption linked to improved endothelial function (flow-mediated dilation) |
| Greek Coffee Drinkers in Study | 87% consumed boiled Greek coffee daily |
| Endothelial Measurement Method | Ultrasound flow-mediated dilation (FMD) |
| FMD Results | Low intake: 4.33% / Moderate: 5.39% / High: 6.47% |
| Caffeine Level | Low to moderate compared to drip or espresso |
| Key Bioactives | Polyphenols, antioxidants, chlorogenic acids (CGAs) |
| Brewing Method | Decoction — simmered in a copper briki pot |
| Grind Size | Extra-fine, powder-like |
| Foam Produced | Kaimaki (thick dark foam) |
| Ikaria Longevity Rate | 1% live past 90 (vs. 0.1% European average) |
| Protective Mechanism | Nitric oxide bioavailability, oxidative stress reduction, arterial elasticity |
This leisurely coffee ritual turns out to be worthwhile from a scientific standpoint. In a study published in Vascular Medicine, Dr. Gerasimos Siasos and his colleagues at the University of Athens Medical School discovered a linear correlation between older Ikarians’ improved endothelial function and their consumption of boiled Greek coffee. 142 residents between the ages of 66 and 91 were examined in the study. Every day, over 87% of the participants drank boiled Greek coffee. A measure of how well blood vessels expand and relax, flow-mediated dilation, was significantly better in those who drank more than in those who drank less or drank different kinds of coffee. The part that the researchers found most noteworthy was that the effect persisted even in individuals with high blood pressure.
Since most people are unaware of the endothelium, it is important to comprehend it in this context. Every blood vessel in the body, including arteries, veins, and capillaries, is lined with a single, continuous layer of cells. It manages inflammation, blood pressure, clotting, and constriction or relaxation of the vessels. Blood flows easily and arteries remain elastic when this lining functions properly. Vascular stiffness, plaque formation, and an increased risk of heart attacks and strokes occur when it deteriorates, as it frequently does with aging, smoking, and metabolic diseases. Endothelial function protection is not a minor health issue. It plays a major role in how and when individuals pass away from cardiovascular causes.
The percentage of Europeans who survive past 90 is just 0.1%. The percentage is 1% on Ikaria, which is ten times higher, and the majority of those long-lived inhabitants are in good health rather than just getting by. The Mediterranean diet, regular exercise, afternoon naps, and close social relationships are some of the factors that researchers have identified. However, the Siasos study wasn’t merely demonstrating that coffee was good overall, so the coffee finding is specific enough to merit its own examination. On the endothelial measure, boiled Greek coffee outperformed other coffee varieties, indicating something about the preparation process.
Extraction is probably the key to the mechanism. Instead of being forced through under pressure or poured over a filter, Greek coffee is ground into an incredibly fine powder, finer than Italian espresso, and then slowly simmered with water. Compared to most other brewing techniques, this decoction method dissolves a greater concentration of polyphenols, antioxidants, and chlorogenic acids into the liquid. These substances appear to support the body’s synthesis of nitric oxide, the signaling molecule that maintains arteries dilated and elastic, and shield blood vessels from oxidative stress. Additionally, Greek coffee has a moderate amount of caffeine—less than an American drip coffee or a concentrated espresso shot—so the cardiovascular benefit is not accompanied by the sympathetic nervous system jolt that high-caffeine beverages can cause.
It’s important to avoid exaggerating this. The Siasos study is observational in nature, demonstrating correlation rather than causation. In a culture that organizes the day quite differently from most contemporary urban settings, Ikarians sip their coffee slowly, frequently with friends, and frequently after taking a nap. It’s really unclear how much of the benefit stems from the bioactives in coffee and how much from the larger lifestyle that those coffee-drinking habits are part of. Most likely both. In longevity research, the majority of things end up being both.
Nevertheless, the finding’s specificity has some merit. These are not exotic beans. The cost of the copper briki is low. About three minutes of light attention are needed for the preparation. The grind, the slow simmer, the discipline to avoid drinking the muddy sediment at the bottom, and the patience to let the foam rise without hurrying it are what make a difference. It’s possible that the entire process of making Greek coffee—slowing down, observing, and waiting—is inextricably linked to its health benefits. It’s also possible that the polyphenols are simply carrying out their intended function. In any case, it appears that the Ikarians figured this out long before a study was published.
