A drop of vinegar controls sugar

The claim:
Vinegar can help lower blood sugar levels.
The facts:
For people with diabetes or those who are sensitive to the blood-sugar spikes that can follow big meals, there’s good news. Several studies have revealed a possible way to reduce the impact of a carb-laden dish: add a little vinegar. Doing so seems to help slow the absorption of sugar from a meal into the bloodstream, apparently because vinegar helps block digestive enzymes that convert carbohydrates into sugar.

One study by Italian researchers showed, for example, that when healthy subjects consumed about four teaspoons (20 millilitres) of white vinegar as a salad dressing with a meal that included white bread with a little less than two ounces (50 grams) of carbohydrates, there was a 30 per cent reduction in their glycemic response, or rise in blood sugar, compared with subjects who had salad with a dressing made from neutralised vinegar