Caffeine impact (IMAGE) University of Turku Caption The effects of high and low consumption of caffeine on the brain’s dopamine transporter binding in patients diagnosed with Parkinson’s disease. Credit Clinical Neurosciences / University of Turku Usage Restrictions Please attribute image to the creator. License Original content 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.