The first category: people with too much stomach acid or patients with gastric ulcer, because fruit vinegar contains a trace of “vinegar”, a large amount of drinking on an empty stomach, the stimulation of the gastric mucosa is strong, easy to cause stomach pain and other discomfort.
The second category: gout patients, causal vinegar is an acidic beverage, which is not conducive to the excretion of blood uric acid.
The third category: diabetic patients, because the average fruit vinegar is relatively high in sugar content, and it will affect blood sugar because of the intake of a large amount of sugar.
The fourth category: those who are taking certain western medicines should not drink fruit vinegar. Because acetic acid can change the pH of the human gastrointestinal tract, so that some drugs can not function.