You may not be aware of the health benefits of apple cider vinegar.

Apple cider vinegar is made from the juice of crushed apples that has been fermented. Apple cider vinegar, like apple juice, may contain a variety of vitamins and minerals as well as dietary fiber. Acetic acid and citric acid may also be present in apple cider vinegar. However, knowing exactly what's in some apple cider vinegar products can be difficult. In the United States, there is no clear definition of what constitutes apple cider vinegar. As a result, the amount of each component of apple cider vinegar may differ from one product to the next.
Apple cider vinegar is used to treat obesity, diabetes, hair and skin problems, and other ailments, but there is no scientific evidence to back up these claims.

What is the mechanism behind it?

Apple cider vinegar is made from the juice of crushed apples that has been fermented. It has acetic acid as well as nutrients like B vitamins and vitamin C. Apple cider vinegar may help diabetics lower their blood sugar levels by altering the way food is absorbed from the gut. Some foods may be protected from breakdown by apple cider vinegar.

For diabetes, indigestion (dyspepsia), delayed gastric emptying (gastroparesis), weak bones (osteoporosis), weight loss, leg cramps and pain, sore throats, sinus problems, high blood pressure, osteoarthritis, and to help rid the body of toxins, stimulate thinking, slow the aging process, reduce cholesterol, and fight infection, apple cider vinegar is taken by mouth alone or with honey.

Some people use apple cider vinegar as a skin toner, to relieve sunburn, to treat shingles, insect bites, and to prevent dandruff. It's also used to treat vaginal infections in the bath.

Apple cider vinegar is used as a flavoring agent in foods.

Some apple cider vinegar products make it difficult to tell what's in them. Commercially available apple cider vinegar tablets were tested in the lab and found to contain a wide range of ingredients. Acetic acid concentrations ranged from around 1% to 10.57 percent. Citric acid concentrations ranged from 0% to around 18.5 percent. The amounts of ingredients specified on the product labels did not correspond to the laboratory results. There is no legal description of what apple cider vinegar must contain in order to be called apple cider vinegar in the United States.