Steven Heymsfield, executive director of the Pennington Biomedical Research Center, an NIH-funded institution in Baton Rouge, La.

WSJ: A Good Way to Measure Obesity? Fat Chance

Jeffrey Keller, a professor at Pennington Biomedical Research Center in Baton Rouge, Louisiana, who studies aging, metabolism, and neurodegeneration, agreed that seeing results after such a relatively short period of calorie restriction was surprising.

CNN: Cutting calories may boost your memory

"It is a tour de force and offers a new and potentially exciting opening for developments of new anti-obesity drugs -- something which is badly needed, " says Dr. George Bray, chief of the Division of Clinical Obesity and Metabolism at Pennington Biomedical Research Center at Louisiana State University.

CNN: STORY HIGHLIGHTS