Lona Sandon (IMAGE) UT Southwestern Medical Center Caption Although most people only gain a pound or two during the holidays, registered dietition Lona Sandon warns that even slight annual weight gains can accumulate and endanger health. Credit UT Southwestern Medical Center Usage Restrictions Please use credit line 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.