Regular coffee consumption does not trigger a major increase in physiological stress markers like cortisol, according to a study published in Nature Communications [1].
This finding challenges common perceptions that caffeine induces a state of biological stress. Understanding how coffee affects the body's stress response helps clarify the relationship between daily habits and long-term mental health.
The research involved scientists from the Texas A&M College of Veterinary Medicine and Biomedical Sciences [1]. The team investigated how coffee consumption influences stress physiology, mood, cognition, and digestive health [2]. Their results indicate that coffee does not increase the body’s stress response under normal conditions [1].
Beyond the lack of a stress response, the study found that regular coffee consumption may positively affect digestion, mood, and cognition [2]. Some reports indicate that both caffeinated and decaf coffee improved memory and mood [3]. This suggests that the benefits may stem from compounds other than caffeine alone.
While some researchers found no measurable increase in stress markers, other data suggests a more active benefit. Some findings link a consumption rate of two to three cups of coffee per day with the lowest risk of stress-related outcomes [4].
Additional research suggests coffee is linked to a longer life and a lower risk of chronic disease [5]. However, scientists said the specific biological pathway that enables these effects is still being clarified [5]. The current study adds a layer of understanding by suggesting that coffee offers mental health perks that extend beyond simple longevity [6].
“Coffee does not increase the body’s stress response under normal conditions.”
These findings suggest that the 'jitters' associated with coffee may be a subjective experience rather than a systemic physiological stress response. By decoupling caffeine from cortisol production, the research implies that moderate coffee consumption is not only benign regarding stress but may actively support cognitive and digestive health.
