Calorie Restriction Diet Mouse (IMAGE) Cell Press Caption This photograph shows a mouse on a calorie restriction diet, meaning it ate 60 percent of the calories of an ad libitum group. Credit Maria Fernanda Forni Usage Restrictions Credit Required. 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.