 This is a randomized, controlled prospective study, carried out in participants who have been diagnosed with persistent IGT using the 1999 World Health Organization WHO criteria. Interested participants who fulfilled the inclusion criteria participated in this prevention programme. Screening was carried out in the work places. The participants were advised not to do any strenuous work during the screening period. Interested participants, after an overnight fast of 8 to 12 hours, underwent a capillary blood glucose test 2h PG after an ingestion of 75G glucose. Among the subjects identified with IGT, those with 2h PG values 8.9 mmoll 160 mgdl were invited for a confirmatory OGTT, within a week. During the 2nd GTT, venous blood samples were collected at fasting 0 minute, 30 and 120 minutes after the glucose intake.Subjects who satisfied the criteria for IGT on both occasions were recruited for this prevention programme. Randomized was based on the MATLAB randperm random number generator MARSAGLIA RANDOM NUMBER generator algorithm. 