“The CALERIE data in this paper confirm our previous findings indicating that the CALERIE intervention slowed the pace of biological aging,” Daniel Belsky, an associate professor of epidemiology at Columbia University’s Mailman School of Public Health, told Newsweek. 

“The observation of this similar result is important because the authors are using different tools developed in different ways to test the hypothesis and get the same result,” he added. Mild calorie restriction for 2 years vastly reduces biological aging (interestingengineering.com)