Apple vinegar consumption has potential health benefits, including weight loss and lower blood glucose levels, with seemingly insignificant side effects.
The researchers performed a systematic search of multiple databases such as PubMed, PsycInfo, CINAHL, and Embase to locate relevant articles about the effects and side effects of consuming apple vinegar on metabolic parameters and body weight. They assessed papers that had both primary outcomes (glycated hemoglobin, postprandial glucose, and other terms for blood glucose) and secondary outcomes (waist circumference, visceral fat, high-density lipoprotein, low-density lipoprotein, triglycerides, and total cholesterol), including studies performed on both humans and animals. Each included human study was evaluated for risk bias using a version of the Cochrane Collaboration's tool.
Out of the 487 papers identified, 13 human studies and 12 animal studies were included. The results indicate that consuming apple vinegar may have beneficial health effects, and the side effects appear to be of little concern when ingested in recommended quantities and manners.