Apple cider vinegar

The proponents of apple cider vinegar say that if you regularly use the vinegar "with the mother" - the cloudy combination of bacteria and yeast - you have a cure-all, whether it is a better skin or a more efficient metabolism.

Some studies suggest a beneficial impact on glucose metabolism and weight loss, while other studies have found no effect compared to a placebo.

Drinking ACV may do more harm than good. It's been linked to tooth enamel erosion, gastrointestinal issues such as reflux, and reduced potassium levels.