Research

Energy balance

Time-restricted eating (TRE) with a 9-hour window (10:00-19:00) does not significantly improve glycaemic control (HbA1c) or reduce body mass in individuals with Type 2 Diabetes compared to habitual eating patterns.

If you have Type 2 Diabetes, simply shifting your eating window to 9 hours (e.g., 10am-7pm) without changing *what* or *how much* you eat will not significantly improve your blood sugar levels or help you lose weight. TRE may be feasible to adhere to, but it is not an effective standalone metabolic intervention for T2D unless it leads to reduced caloric intake.

ModerateRefutesMEDIUM confidence
Overall, TRE did not significantly improve measures of glycaemic control (HbA1c −0.2 ± 0.4%; p = 0.053) or reduce body mass.
Evelyn B. Parr et al. · Nutrients · 2020

Why this rating

Feasibility study with small sample size (n=19), non-randomized, pre-post design, but rigorous dietary monitoring via photos.

Source

Time-Restricted Eating as a Nutrition Strategy for Individuals with Type 2 Diabetes: A Feasibility Study

Evelyn B. Parr et al. · Nutrients · 2020

DOI 10.3390/nu12113228

clinical_guideline · n=19Cited 143×
Read the paper
DOI resolved against Crossref · corpus check 2026-06-10

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