The previously mentioned study also measured blood sugar levels in the vinegar-fed and control group. Participants who were given ACV had significantly lower post-meal blood glucose levels (there was no spike that usually follows a meal high in carbohydrates). Furthermore, those who consumed a higher dose of vinegar, benefited from the effect even 90 minutes after eating.
You can get more information on how to naturally control blood sugar in my articles about the best foods to control diabetes, and 7 effective steps to prevent diabetes.