Teen Stimulant Misuse (IMAGE) Michigan Medicine - University of Michigan Caption The peak ages for starting to misuse ADHD drugs and other stimulants are younger than many might think, new research shows. Credit University of Michigan Usage Restrictions None License Licensed 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.