This came up in a search.
Fast and Furious wrote:
Adding Apple-Cider vinegar to your meals and salads, as well as lemon juice, can neutralize metabolic acidosis and reduce renal acidity and the PRAL of the meals. It also can stabilize glycemia (blood glucose levels) and reduce the glycemic (and the insulinemic) responses to the meals and therefore might combat carb craving and appetite, which ultimately reduce food and energy intake. It also improves immune function and has powerful anti-oxidative properties. Yep, there is also scientific evidence and some studies suggesting acetic acid and vinegar can improve insulin sensitivity, glucose disposal and glycogen resynthesis and repletion in liver and skeletal muscles. Combine all together, those effects might help you to improve health, body composition and even sports performance.
Also, apple cider vinegar with a little olive oil as a salad dressing is damn tasty (and healthy)!