Vinegar delays gastric emptying and lowers postprandial blood glucose and insulin levels.
We have talked about apple cider vinegar as a beneficial remedy. Some recent studies have shown that vinegar affects insulin-dependent diabetes mellitus patients with diabetic gastroparesis by reducing the gastric emptying rate even further, and this might be a disadvantage regarding to their glycaemic control.
This means that if you have a diabetes or any other serious health condition, take care and always confirm with your doctor before starting a self-treatment regime.