Drs. Rebecca Delconte and Joseph Sun (IMAGE) Memorial Sloan Kettering Cancer Center Caption Animal model reseach led by Rebecca Delconte, PhD, and Joseph Sun, PhD, has shown for the first time that fasting can reprogram the metabolism of natural killer cells, helping them to survive in the harsh environment in and around tumors, while also improving their cancer-fighting ability. Credit Memorial Sloan Kettering Cancer Center Usage Restrictions Attribution License Original 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.