A Randomized Pilot Study of Time-Restricted Eating Shows Minimal Microbiome Changes.

Area of Science:

• Human microbiome research
• Metabolic health and obesity interventions

Background:

• Time-restricted eating (TRE) is an emerging strategy for obesity management.
• Limited data exists on TRE's impact on the human gut microbiome composition.

Purpose of the Study:

• To characterize changes in gut microbiome composition before and after a TRE intervention in human participants.
• To conduct a secondary analysis of a clinical trial on TRE's effects.

Main Methods:

• Shotgun metagenomic sequencing of stool samples collected at baseline and post-intervention.
• Comparison of microbiome community composition using alpha and beta diversity metrics.
• Analysis of data from a subset of participants in a 12-week randomized controlled trial.

Main Results:

• No significant differences in alpha or beta diversity were observed between the TRE and control groups.
• The TRE group successfully reduced their eating window, leading to weight and visceral fat loss.
• The study was limited by a small sample size (n=5 for full analysis) and short duration.

Conclusions:

• TRE intervention did not significantly alter gut microbiome composition or diversity in this study.
• Larger sample sizes, longer durations, and detailed dietary data are necessary for future TRE and microbiome research.
• The relationship between TRE and gut microbiome dynamics requires further investigation.