Matz Larsson, Örebro University (IMAGE) Swedish Research Council Caption "There is a link between nicotine and testosterone. Nicotine can influence development of the brain and interacts with testosterone particularly during the fetal stage, and this could make boys extra susceptible to fetal nicotine exposure," says Matz Larsson, researcher in medicine and consultant physician at Örebro University Hospital. Credit Örebro University, Sweden 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.