Time-Restricted Eating (TRE) — Diets
Circadian-aligned eating pattern confining food intake to a consistent daily window of 8-12 hours.
Overview
Time-Restricted Eating (TRE) is a broader framework encompassing any consistent daily eating window (typically 8-12 hours), emphasizing circadian alignment over calorie counting. Satchin Panda's research at the Salk Institute has demonstrated that TRE without calorie reduction can improve metabolic health by aligning nutrient intake with circadian gene expression patterns. The 2022 TREAT trial and multiple Panda lab studies show TRE improves glucose regulation, blood pressure, and lipid profiles even without intentional calorie restriction. Early TRE (eTRE, eating earlier in the day) appears to confer greater metabolic benefits.
Indications
- Metabolic health optimization
- Circadian rhythm restoration
- Blood glucose management
- Cardiovascular risk reduction
- Weight maintenance
Mechanism of Action
Consistent eating windows synchronize peripheral organ clocks with the central suprachiasmatic nucleus pacemaker
Dosing
| Compound | Dose | Frequency | Notes |
|---|---|---|---|
| Time-Restricted Eating | 10-12 hour eating window | Daily | Entry level; achievable for most people |
| Early TRE | 8-10 hour eating window (e.g., 7 AM - 5 PM) | Daily | Greater metabolic benefits from circadian alignment |
Evidence Grade
GRADE C
Safety & Contraindications
- Social and lifestyle challenges with strict windows
- May not be suitable for shift workers without modification
- Ensure adequate calorie and nutrient intake within the window
- Late eating windows may reduce sleep quality
- Adjust medication timing if needed