Amir Zarrinpar, a co-first author on the paper from the University of California San Diego, said it was encouraging that a simple increase in daily fasting time prevented weight gain and the onset of disease. “Otherwise, this could have been only partly achieved with a number of different pills and with adverse side effects,” he says.

The multimillion-dollar question is what these findings mean for humans. Public health surveys on nutrition have focused on both the quality and quantity of diet, but they have inherent flaws such as sampling bias, response bias and recall errors that make the results questionable. Thus, says Panda, with the current data it is difficult to connect when we eat, what we eat with how much weight we gain.

“The take-home message,” says Panda, “is that eating at regular times during the day and overnight fasting may prove to be beneficial, but, we will have to wait for human studies to prove this.”

The good news, he adds, is that most successful human lifestyle interventions were first tested in mice, so he and his team are hopeful their findings will follow suit. If following a time-restricted eating schedule can prevent weight gain by 10 to 20 percent, it will be a simple and effective lifestyle intervention to contain the obesity epidemic.

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Other researchers on the study were Christopher Vollmers, Amir Zarrinpar, Luciano DiTacchio, Shubhroz Gill, Mathias Leblanc, Amandine Chaix, Matthew Joens and James A.J. Fitzpatrick, from the Salk Institute; and Eric A. Bushong and Mark H. Ellisman, of the University of California, San Diego.

This work was partially supported by the Pew Scholars Program in Biomedical Sciences, NIH grant R01DK091618 to M.M., Sanofi Discovery Innovation Grant, and Anderson Foundation support to S.P.; JSPS fellowship to M.H.; Blasker Science and Technology Grant Award to C.V.; NIH grant T32DK007202 to A.Z.; and NCRR grant 5P41RR004050 to M.H.E.

About the Salk Institute for Biological Studies:

The Salk Institute for Biological Studies is one of the world’s preeminent basic research institutions, where internationally renowned faculty probe fundamental life science questions in a unique, collaborative, and creative environment. Focused both on discovery and on mentoring future generations of researchers, Salk scientists make groundbreaking contributions to our understanding of cancer, aging, Alzheimer’s, diabetes and infectious diseases by studying neuroscience, genetics, cell and plant biology, and related disciplines.

Faculty achievements have been recognized with numerous honors, including Nobel Prizes and memberships in the National Academy of Sciences. Founded in 1960 by polio vaccine pioneer Jonas Salk, M.D., the Institute is an independent nonprofit organization and architectural landmark.

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Andy Hoang
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Salk Institute