So Ran Kwon, University of Iowa (IMAGE) University of Iowa Caption This is So Ran Kwon, University of Iowa dental researcher who found that strawberries do not whiten teeth, despite some advertisements of the fruit's effectiveness. Credit Univ. of Iowa 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.