The vinegar and honey diet is intended to work as a weight-loss aid by suppressing appetite and aiding digestion. While there is some evidence to support the anti-inflammatory properties of honey and the weight-loss benefits of vinegar, more research is needed before the diet can be recommended by doctors.
People following the vinegar and honey diet are instructed to drink a mixture of 1 tablespoon of apple cider vinegar, 1 tablespoon of honey and 8 ounces of unsweetened grapefruit juice or water before meals. Apple cider vinegar contains pectin, which is a carbohydrate that may reduce hunger and help the dieter eat less at mealtime.
Some animal studies suggest a correlation between vinegar intake and lower body fat. A 2009 study of 175 obese and healthy patients found that those who consumed the most vinegar lost the most weight over a 12-week period. However, the weight loss was relatively small and all of the patients had regained the weight four weeks after the study ended.
Honey contains several essential minerals and has antibacterial properties attributed to its slight acidity. Honey may help in the treatment of digestive issues, such as ulcers and gastroesophageal reflux. As of 2015 these claims are not yet scientifically proven.