|Not an old wife--but best I could do.|
Like all vinegar, apple cider vinegar contains acetic acid--but it also has trace amounts of antioxidants.
It helps you feel full longer. In a small study, people who consumed vinegar before eating a breakfast of white bread reported feeling more satisfied than the controls at the 60 minute mark, but by two hours, both groups were hungry.
It cancels some carbs. The acetic acid does interfere with enzymes responsible for digesting starch, so you can't absorb the calories as well. There is no science on how many cals vinegar can block, though. Oh--it does slow the rush of sugar to your bloodstream if taken before meals, making spikes smaller.
It could lower blood pressure. It did lower BP a few points in animals.
It fights bad breath. It has antibacterial properties, but there are better products for this.
It could boost bone health. Vinegar is acidic, but in the system, it makes your pH more alkaline. Studies show people with a more alkaline body (more veggies, less meat) may have greater bone density. No research on it, though.
Relieves heartburn. If the heartburn is from a food, it can neutralize. If the heartburn is from a lesion, vinegar can make it worse.
It cleans wounds. It is antibacterial as we have said, but it also can irritate the skin around an open wound. Ouch. As for curing acne--remember that irritation.
Deodorizes feet. Yes!
If you want to give apple cider vinegar a try, dilute a tablespoon in a cup of water.
Never take more than two tablespoons--way too much of a possibly good thing.