I wouldn't be too confident vinegar prevents cancer, despite Cal's claims. How well-established is the proof vinegar works?:

"There is no scientific evidence that apple cider vinegar has any medicinal properties. While the folksy anecdotes from those who claim to have benefited from apple cider vinegar tonics may be amusing to read, they are simply that -- anecdotes.

Apple cider vinegar is anything but a storehouse of nutrients. A nutritional analysis of one tablespoon (more than the one or two teaspoons suggested to make a tonic) reveals that the golden liquid contains less than a gram of carbohydrate: minuscule amounts of calcium, iron, magnesium, sodium, copper, manganese, and phosphorus; and a mere 15 mg of potassium. The fiber, vitamin, and amino acid content is zero.

As for the presence of any beneficial enzymes in apple cider vinegar or the "mother," food scientists doubt that any could thrive in the acid environment of the vinegar. Assuming any were present, though, they would be destroyed in the acid of the stomach when consumed and be of no use to the body."

• another point of view