The benefits of eating vinegar are mainly to increase appetite, and the disadvantages may damage teeth and cause acid reflux in some people with abnormal gastrointestinal function. Vinegar is a common condiment in life is mainly made from grain fermentation and brewing, which contains a large number of free amino acids and lactic acid, can flavor and increase appetite. But usually avoid eating too much vinegar, because too much vinegar may cause some corrosion of the teeth, damage to the teeth, and too much vinegar is also easy to lead to excessive secretion of gastric acid, which can cause gastric symptoms. Especially for those who have more gastric acid secretion, such as chronic gastritis, gastric ulcer, duodenal ulcer, try to eat less vinegar to avoid aggravating gastrointestinal discomfort.