Man smoking (IMAGE) Aarhus University Caption Although smoking can provide an immediate feeling of calm and relaxation, the habit has serious long-term consequences - also in the brain. New figures from Aarhus University suggest that smoking significantly increases the risk of severe mental disorders. Credit Mateo Avila Chinchilla Usage Restrictions No restrictions. License CC0 Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.