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The implementation of a lifestyle intervention programme to prevent T2DM in the community is practical and feasible, accompanied by favourable lifestyle changes. Recruitment from workplaces was the most successful strategy.

Background/Objectives: Earlier studies have shown that the addition of vinegar in a carbohydrate-rich meal lowers glucose and insulin response in healthy individuals. The mechanism of how this is accomplished, however, remains unclear. The aim of this study is to examine the effect of vinegar on glucose and insulin response in patients with type II diabetes (T2D) in relation to the type of carbohydrates consumed in a meal. Subjects/Methods: Sixteen patients with T2D were divided into two groups, matched for age, gender and HbA 1c . Patients in the first group (group A) were given a high-glycaemic index (GI) meal (mashed potatoes and low-fat milk) on two different days, with and without the addition of vinegar, respectively. In the second group (group B), patients were given an isocaloric meal with the same nutrient composition, but low GI (whole grain bread, lettuce and low-fat cheese). Postprandial plasma glucose and insulin values were measured every 30 min for 2 h. Results: In group A, the incremental area under the curve of glucose (GiAUC 120 ) was lower after the addition of vinegar (181 ± 78 mmol Á min/l vs 311 ± 124 mmol Á min/l, P ¼ 0.04). The iAUC of insulin (IiAUC 120 ) was also reduced, but the difference was of marginal statistical significance (2368±1061 mU Á min/ml vs 3545±2586 mU Á min/ml, P ¼ 0.056). In group B, the addition of vinegar did not affect either the GiAUC 120 (229 ± 38 mmol Á min/l vs 238 ± 25 mmol Á min/l, P ¼ 0.56) or the IiAUC 120 (2996±1302 mU Á min/ml vs 3007±1255 mU Á min/ml, P ¼ 0.98). Conclusions: We conclude that the addition of vinegar reduces postprandial glycaemia in patients with T2D only when it is added to a high-GI meal.

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