Time-Restricted Eating Improves Gut Health and Cardiometabolic Markers: Study

Medically Reviewed By : Dr. Kamal Kant Kohli

Published On 2026-06-06 02:45 GMT | Update On 2026-06-06 02:45 GMT

China: A new study among young adults with overweight or obesity revealed that an 8-week regimen of early or late 6-hour time-restricted eating (TRE) led to significant changes in gut microbiota composition and serum metabolite profiles. These biological changes were closely associated with weight loss and improvements in cardiometabolic health, suggesting that TRE may promote metabolic benefits through favorable effects on the gut microbiome and metabolism.

The findings, published in Obesity: A Research Journal, come from a randomized controlled trial conducted by Li-Min Zhang and colleagues from the Hebei Key Laboratory of Environment and Human Health, China. The study investigated whether the timing of food intake during time-restricted eating influences gut microbial communities and metabolic pathways, and how these changes relate to cardiometabolic risk factors in adults with overweight or obesity.

In this 8-week randomized trial, 60 young adults with overweight or obesity were assigned to early TRE (7 a.m.–1 p.m.), late TRE (12 p.m.–6 p.m.), or a control group with no eating-time restrictions. Gut microbiota and serum metabolites were evaluated using advanced sequencing and metabolomic analyses.

Both TRE schedules produced favorable changes in the gut microbiome. Early TRE increased beneficial bacteria such as Faecalibacterium and Lactobacillus while reducing Peptostreptococcaceae. Late TRE also increased Faecalibacterium abundance and reduced Shigella, a potentially harmful bacterial genus.

Key findings of the study included:

Time-restricted eating increased gut microbial diversity, a marker generally associated with better gut health.
Beneficial bacterial groups, including Faecalibacterium and Lactobacillus, became more abundant following TRE.
Potentially harmful microorganisms were reduced after the intervention.
TRE led to measurable changes in circulating metabolites linked to metabolic function.
Changes in gut microbiota and serum metabolites were significantly associated with reductions in body weight, body fat, and systolic blood pressure.
Distinct metabolites, including L-malic acid in the eTRE group and isovaleric acid in the lTRE group, were linked to improvements in cardiometabolic parameters.

The authors noted that irregular eating schedules can disrupt the natural circadian rhythm of the gut microbiome, potentially contributing to obesity and metabolic dysfunction. Their findings suggest that limiting food intake to a defined daily window may help restore favorable microbial and metabolic patterns that support weight management and cardiovascular health.

The researchers concluded that time-restricted eating may offer benefits beyond calorie reduction by influencing both gut microbial composition and metabolic pathways. They believe these findings provide new insights into how eating schedules affect metabolic health and may help guide dietary strategies for young adults seeking to reduce excess weight and improve cardiometabolic outcomes.

Reference:

Zhang, L. M., Wang, Z. D., Zhang, Z., Liu, J., Li, Z. H., Ren, Y. R., Liu, Z., Zhang, X., Wang, X. Y., Qi, K. X., Yuan, C., Guo, H., Zhang, Y. F., Ge, J., & Ma, Y. X. Effects of Time-Restricted Eating on Gut Microbiota and Metabolites and Their Relationship With Cardiometabolic Risk Factors. Obesity. https://doi.org/10.1002/oby.70207

Article Source : Obesity: A Research Journal

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Medha Baranwal

Medha Baranwal holds a Bachelor’s degree in Biomedical Sciences from the University of Delhi and a Master’s degree in Biotechnology from Amity University. Since May 2018, she has been contributing to Medical Dialogues, writing and editing medical news articles that translate complex research into clear, accessible information for healthcare professionals.

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Time-Restricted Eating Improves Gut Health and Cardiometabolic Markers: Study

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