Apple Cider Vinegar

But lowering your blood sugar after a meal is just about the only benefit of drinking apple cider vinegar. Research does suggest that acetic acid can slow down the accumulation of body fat and prevent metabolic disorders in mice and rats. But there's little evidence that it has the same effect on humans. In one weight-loss experiment, 30 volunteers drank two tablespoons of either apple cider vinegar, malt vinegar, or a placebo drink, twice a day, for two months straight, and none of them lost weight. In an older study with a similar design, participants did lose weight, but only about a third of a pound each week, which McDonald says isn't much. But if not for weight loss, what about using cider vinegar to whiten your teeth? I caution people against that. That's because cider vinegar is an acid. In fact, most brands have a pH between 2 and 3, which is similar to stomach acid, so swishing it around in your mouth can over time wear down the enamel around your teeth, leaving them feeling rough to the touch and more susceptible to cavities and decay.