A new study published in Nature Communications has found that the longevity benefits of intermittent fasting in a model organism may be driven by the body’s response to eating again after a fast, rather than the fasting period itself. Researchers from the University of Texas Southwestern Medical Center compared Caenorhabditis elegans worms that were fed normally to those that underwent a 24-hour fast in early adulthood and were then allowed to feed again
. The scientists measured stored fat, gene activity related to fat metabolism, and lifespan. According to the study authors, the health-promoting effects of intermittent fasting depend on metabolic recalibration during the transition back to a fed state
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