Effect of fasting-mimicking diet on markers of autophagy and metabolic health in human subjects.
Sara E Espinoza, Sue Park, Gavin Connolly et al.
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In 30 seconds
This pilot randomized clinical trial assessed whether an 8-day fasting-mimicking diet (FMD) affected autophagic flux and metabolic markers in 30 healthy participants randomized to ProLon, FMD2, or control. Autophagic flux was assessed in peripheral blood mononuclear cells, alongside metabolic measures. From baseline to the end of the 6-day dietary intervention, between-group differences were significant for changes in body weight, fasting glucose, β-hydroxy-butyrate, HOMA-IR, and autophagic flux (p < 0.05). Differences were not significant across all time points, and the authors call for larger studies to confirm the findings.
Key findings
- Baseline-to-end-of-intervention changes differed significantly between groups for body weight, fasting glucose, β-hydroxy-butyrate, HOMA-IR, and autophagic flux (p < 0.05).
- Between-group differences were not significant across all measured time points.
Why it matters
The trial provides preliminary human evidence that an FMD may influence cellular autophagy measures as well as metabolic markers. These outcomes are relevant to research on dietary approaches to metabolic health, but the findings are limited to a short intervention in healthy participants and do not establish sustained benefit or clinical outcomes.
What to keep in mind
This was a pilot trial with 30 participants and an 8-day intervention; differences were not significant across all time points. The authors state that larger studies are needed.