Apple cider vinegar (ACV) has been called a miracle elixir for everything from digestion to weight loss. You've probably seen claims that a daily dose can help burn fat, curb appetite and speed up metabolism-but does it really work?

Vinegar has been used for thousands of years as a tool for pickling, food preservation, medicine and more -- and for good reason. Nowadays, due to its antimicrobial and antioxidant properties, apple cider vinegar has gained popularity as both a health and home hack.