Korean Diet Efficacy Clinical Trial

Inclusion Criteria: * Residents of metropolitan Sydney * Aged 18-65 years * BMI 25-45kg/m2 Exclusion Criteria: * Diabetes treated with oral medications or insulin * Unstable angina or recent onset of cardiovascular disease * Serious hepatic or renal disease * serum transaminases (ALT or AST) \> 2.5 times upper limit of normal * serum creatinine \> 1.5 times upper limit of normal or urinary microalbumin \>40 mg/L or eGFR \< 60ml/min/1.73m² * Alcohol or illicit drug abuse * Pregnant, breastfeeding, or planning pregnancy during the study * Serious gastrointestinal disease (inflammatory bowel disease, active peptic ulcer, recent helicobacter pylori treatment) * Treatment for an eating disorder, weight loss medications and other drugs that affect body weight e.g. some anti-psychotics, anti-depressants, or corticosteroids * Hypothyroidism defined by elevated thyroid stimulating hormone (TSH) and low free thyroxine (fT4), or current hyperthyroidism under treatment * Participation in another weight loss clinical trial within past 3 months * Individuals who have lost \>10% weight within past 3 months * Vegetarian eating practices * Inability to cook or lack of facilities for home cooking * Inability to read and write English * Subjects who frequently change smoking habits or who have stopped smoking within 6 months prior to screening