It is not suitable to drink yogurt before meals, when the stomach is in fasting state, the PH value of stomach acid in fasting is below 2, which is not suitable for the growth of active lactic acid bacteria in yogurt, and lactic acid bacteria are easily killed by stomach acid, thus reducing the nutritional value and health effects. The pH value of gastric juice rises to 3-5 when drinking yogurt after meals, and this environment is very suitable for the growth of lactic acid bacteria, so drinking yogurt within 2 hours after meals has the best effect. However, if you have peptic ulcers or patients who usually have more stomach acid secretion, try to avoid drinking yogurt on an empty stomach before meals. Yogurt contains a lot of active bacterial factors, which can effectively help improve symptoms such as lactose intolerance, constipation, diarrhea and enteritis infection. Drinking yogurt not only improves the intestinal environment, but also effectively improves the body’s immune system, and scientific studies have found that yogurt can improve the therapeutic effects of certain anti-inflammatory drugs. However, it is important to remember that certain strains of bacteria and acids in yogurt can damage your teeth, so rinse your mouth or brush your teeth in time after drinking it.