Fibre suppLements fOR Pre-diAbetes - An Assessment Oral Fibre Supplements on Pre-diabetes Outcome Measures

Inclusion Criteria: * Able and willing to provide informed consent * Have a Body Mass Index (BMI) of at least 25 kg/m2 * Men or post menopausal\* women aged 18-70 * Identified as pre-diabetic (HbA1c 6.0% (42 mmol/mol) to 6.4% (47 mmol/ mol)) within the previous 12 months * Baseline HbA1c result within the range 5.8% (40 mmol/mol) - 6.5% (48 mmol/mol) * Willing to complete in clinic blood tests and a participant trial survey * Have access to a smartphone or a computer Exclusion Criteria: * Receiving medication to treat Type 1 or Type 2 diabetes in the previous 6 months * Have a Body Mass Index (BMI) \<25 kg/m2 and \>45 kg/m2 * Loss of more than 5% body weight in last 3 months * Current participation in weight loss program or planned in the next 16 weeks * Steroid use (except for over the counter NSAID's, topical steroids and inhalers) * Severe hepatic diseases (including chronic persistent hepatitis, liver cirrhosis or the co-occurrence of positive hepatitis B virus surface antigen and abnormal hepatic transaminase (serum concentrations of alanine transaminase or aspartate transaminase \>2.5× the upper normal limit)) * Continuous antibiotic use for \>3 days within 4 weeks prior to enrolment * Continuous use of weight-loss drug for within 3 months of study entry