Feng Lei (IMAGE) National University of Singapore Caption A research team led by Asst Prof Feng Lei from the NUS Department of Psychological Medicine studied brain imaging data of older adults and found that those who consume tea at least four times a week have better brain efficiency. Credit National University of Singapore 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.