New evidence suggests moderate coffee consumption is linked to lower risks of mood and stress disorders, offering insights into how daily habits can influence psychological well-being. Biological mechanisms like inflammation and neurostimulation have been proposed, but population-level clarity was limited.
A large prospective study analyzed 461,586 participants from the UK Biobank, following them for over 13 years. The study identified 18,220 mood disorder cases and 18,547 stress disorder cases.
A J-shaped association was found, with the lowest risk observed for individuals consuming 2-3 cups of coffee per day. These associations were stronger in men, though genetic variations in caffeine metabolism did not significantly alter the findings.
These findings suggest that moderate coffee intake may support mental health. Future research will explore biological mediators and causal pathways.