Secondhand Smoke (IMAGE) Brigham Young University Caption Mikayla Thatcher, lead author on a new study that finds how secondhand smoke can cause weight gain. Credit Mark A. Philbrick 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.