Pite kávu pre zdravý mozog: Nová štúdia Harvardu spája 2 až 3 šálky denne s nižším rizikom demencie

For many of us, coffee is a ritual that starts the day. Whether it's a quick espresso in Bratislava on the way to work or a slow filter morning at home, coffee accompanies us in key moments. However, the latest scientific data from the Harvard T.H. Chan School of Public Health suggest that this popular drink is not just about a caffeine kick, but represents an important tool in the long-term protection of our brain.

Extensive research with a clear result

A study published in February 2026 in the prestigious professional journal JAMA priniesla prelomové zistenia. Vedci analyzovali dáta od viac ako 130 000 účastníkov, ktorých zdravotný stav a stravovacie návyky sledovali po dobu neuveriteľných 43 rokov. Takto dlhý časový horizont umožnil výskumníkom eliminovať krátkodobé výkyvy a sústrediť sa na skutočný vplyv dlhodobej konzumácie kávy na kognitívne zdravie.

Hlavným zistením je, že ľudia, ktorí pravidelne konzumujú 2 až 3 šálky kofeínovej kávy denne, majú o 18% nižšie riziko vzniku demencie v porovnaní s tými, ktorí kávu nepijú vôbec alebo len minimálne. Tento benefit sa neprejavil len pri diagnóze demencie, ale aj pri subjektívnom vnímaní straty pamäti či v objektívnych testoch kognitívnych funkcií.

Key parameters and research data

The study relied on data from two massive projects: the Nurses’ Health Study and the Health Professionals Follow-Up Study. Thanks to nearly half a century of monitoring, scientists were able to identify correlations that disappear in short-term research.

• Sample: 131 821 osôb.
• Follow-up duration: Up to 43 years.
• Incidence of dementia: Počas štúdie sa vyvinula u 11 033 účastníkov.
• Main result: Pravidelná konzumácia 2 – 3 šálok kofeínovej kávy denne znižuje riziko vzniku demencie o 18 % v porovnaní s ľuďmi, ktorí kávu nepijú.

The research confirmed that coffee consumers also achieved significantly better results in objective tests of overall cognitive functions. The benefit was evident equally in men and women.

Biological mechanisms: Why caffeine works

The study emphasizes that the protective effect is due to caffeine in combination with bioactive substances. Indeed, a similar risk reduction was not confirmed with decaffeinated coffee.

1. Polyphenols: These antioxidants reduce cellular damage and chronic inflammation, which is the main trigger of neurodegenerative changes.
2. Caffeine as a neuroprotector: It acts on adenosine receptors in the brain, thereby not only temporarily increasing alertness but, in the long term, likely protecting neurons from degradation.
3. Genetic resistance: The results were consistent even in individuals with a high genetic predisposition to developing Alzheimer's disease, suggesting that coffee can be an effective intervention tool regardless of heredity.

Specialty coffee as the foundation of a healthy lifestyle

At Goriffee, we emphasize that the coffee we roast in our Bratislava roastery is not only tasty but also clean. Specialty coffee (specialty coffee) undergoes strict quality control processes. Unlike commercial coffees, where beneficial substances are often lost due to poor quality beans or aggressive roasting, specialty coffee retains a maximum of its natural potential.

When you drink coffee with a clear origin, you are sure that you are not consuming beans with defects or molds that could unnecessarily burden the body. The clean profile of coffees from Ethiopia, Colombia, or Brazil, which you can find in our offer, is an ideal way to fulfill the recommended daily dose for the health of your brain.

Prevention that tastes good

Dementia and cognitive decline are challenges faced by more and more people. Since treatment options are still limited after the onset of symptoms, prevention through diet and lifestyle is becoming crucial. According to the study's authors, coffee can be "one of the pieces of the puzzle" in healthy aging.

If you are looking for a way to incorporate these 2 to 3 cups of the highest quality into your day, try our freshly roasted beans. Whether you prefer fruitier flavors for filter or more conservative tones for espresso, investing in quality coffee is ultimately an investment in your health.

Frequently Asked Questions (FAQ)

What amount of coffee is optimal? The study defines the optimal range as 2 – 3 cups a day. Higher consumption did not show negative effects on the brain, but the most significant statistical benefit was exactly within this limit.

Is there a difference between coffee and tea? Yes. The study found that tea has similar neuroprotective effects when consuming 1 – 2 cups a day, which again confirms the role of caffeine and specific antioxidants.

Can milk and sugar in coffee reduce its benefits? Although the study primarily focused on coffee volume, the general scientific consensus suggests that high sugar intake increases inflammatory processes in the body, which can counteract the benefits of coffee itself.

Does this also apply to instant coffee? The research analyzed the consumption of caffeinated coffee regardless of the preparation method, however, the highest content of bioactive substances is naturally found in freshly ground coffee beans.