Caffeine research links compound to cellular aging mechanisms

Researchers at Queen Mary University of London have identified a biological mechanism that may explain why caffeine is associated with positive health effects and anti-aging properties. Using fission yeast as a model, the study found that caffeine can activate AMPK, an evolutionarily ancient system responsible for regulating cellular energy, stress response, and metabolic balance.

While previous research suggested caffeine influences the TOR protein to affect cell growth, this new study indicates that caffeine primarily works by triggering the AMPK system. AMPK acts as a cellular fuel sensor, helping cells adjust their metabolism during energy scarcity. Because AMPK is present in both yeast and humans, it plays a critical role in regulating metabolism, cell growth, immunity, and DNA repair, which is vital for mitigating age-related genetic damage.

Regarding cardiovascular health, caffeine can cause short-term increases in blood pressure by blocking adenosine receptors and stimulating the nervous system. However, for individuals with well-managed hypertension, moderate consumption—typically one to two cups per day—is generally considered safe, though those with very high readings or caffeine sensitivity should exercise caution.