Grapes contain glucose, sucrose, fructose, xylose in sugar; citric acid, malic acid, citric acid and so on in acid. It also contains protein, carotene, and calcium, phosphorus, iron, potassium and other nutrients, the brain is particularly beneficial, grape consumption is not appropriate can also lead to physical discomfort.

Eat grapes can not drink water immediately, otherwise, less than a quarter of an hour will be diarrhea. Grapes themselves have the effect of laxative and laxative, drink water immediately after eating grapes, the stomach can not be digested and absorbed water will be diluted stomach acid, grapes and water, gastric acid oxidation, fermentation, accelerated intestinal peristalsis, produce diarrhea.

Grapes and milk can not be eaten together, because grapes contain fruit acids, will make the milk protein coagulation, not only affect the absorption, serious cases will appear bloating, abdominal pain, diarrhea and other symptoms. Therefore, you should eat grapes after drinking milk for an hour.

Don't eat grapes when eating seafood. Eating seafood when eating grapes, hawthorn, pomegranate, persimmons and other fruits, there will be vomiting, bloating, abdominal pain, diarrhea and other symptoms, because these fruits contain tannins, tannins encountered in the seafood proteins will be coagulated and precipitated, the formation of substances that are not easy to digest.

Always rinse your mouth after eating grapes. Some grapes contain a variety of fermented sugar substances, teeth have a strong corrosive, easy to cause dental caries.