It’s Not Just What You Eat, It’s When You Eat, Mouse Study Finds

THURSDAY, May 17 (HealthDay News) — While most of the research
on diet and obesity focuses on what people eat, a new study in mice
suggests that more attention should be given to when people
eat.

U.S. researchers found that mice that were only allowed to eat for
eight hours a day ate as much as mice that were allowed to eat around the
clock. Both groups ate a high-fat diet, but the mice with the restricted
eating hours gained less weight, had healthier livers and had less
inflammation.

The findings, published online May 17 in Cell Metabolism,
suggest that eating during too many hours of the day may contribute to
obesity.

“Every organ has a clock,” lead author Satchidananda Panda, of the Salk
Institute for Biological Studies in La Jolla, Calif., said in a journal
news release.

That means there are times of the day that the organs, including the
liver, intestines and muscles, operate at peak efficiency and other times
when they work less efficiently, Panda said. These cycles are critical for
processes ranging from cholesterol breakdown to glucose production.
Frequent eating throughout the day and night may throw off these normal
metabolic cycles, he suggested in the news release.

“When we eat randomly, those genes aren’t on completely or off
completely,” Panda explained.

The study results indicate that having restricted meal times may help
prevent weight gain and that when people eat should be given more
attention by obesity researchers.

“The focus has been on what people eat. We don’t collect data on when
people eat,” Panda noted.

While studies involving animals can be useful, they frequently fail to
produce similar results in humans.

More information

The U.S. Centers for Disease Control and Prevention has more about weight.

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