We evaluated the effects of Time-Restricted Eating (TRE) regimen on Impaired Glucose Regulation (IGR) in comparison with overweight/obese patients receiving standard of care over 12 months.

Inclusion Criteria:

1. Aged ≥ 18 year
2. Diagnosis of impaired glucose regulation (i.e. FG between 5.7-6.9mmol/L) +/- impaired glucose tolerance (i.e. 2-hour postprandial PG between 7.8-11.1mmol/L) confirmed by latest OGTT results within 3 months prior to recruitment
3. Body mass index (BMI)of 23.0 to 45.0 kg/m2;

Exclusion Criteria:

1. Confirmed diagnosis of DM or on hypoglycaemic treatment
2. Women who are pregnant or breast-feeding at recruitment
3. Patients taking glucocorticoid at recruitment
4. Active and uncontrolled thyroid diseases (including subjects on thyroid replacement therapy or anti-thyroid drugs) or active endocrine diseases such as Cushing's syndrome or Acromegaly at recruitment
5. Serious liver dysfunction or chronic kidney disease (AST or ALT > 3 times the upper limit of normal, or eGFR<30 ml/min/1.73 m2);
6. History of serious cardiovascular or cerebrovascular disease (angina, myocardial infarction or stroke) in the past 6 months;
7. Taking medications affecting weight or energy intake/energy expenditure in the last 6 months, including weight loss medications, antipsychotic drugs or other medications as determined by the study physician;
8. Currently participating in weight loss programs or weight change in the past 3 months (> 5% current body weight) ;
9. Patients who cannot be followed for 24 months (due to a health situation or migration);
10. Patients who are unwilling or unable to give informed consent.