Illustration (IMAGE) Howard Hughes Medical Institute Caption Experiments that tested various diet plans in mice found that the animals live longest on a low-calorie diet with daily fasting periods. Credit Fernando Augusto/http://made-for.studio Usage Restrictions Must use credit. 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.