What are the contraindications of oranges? 1, oranges can not eat more, it is measured, eat 3 oranges a day, can meet the daily needs of each person on vitamin C. If consumed too much, excessive intake of vitamin C, the body metabolism of oxalic acid will increase, easy to cause urinary calculi, kidney stones. Also eating more is harmful to the mouth and teeth. Eating too many oranges can be harmful to children’s mouth, teeth and stomach mucosa. If children consume oranges in excess, the heat generated can not be converted into fat storage in the body, and can not be consumed in time, it will be caused by the accumulation of “fire”, manifested as stomatitis, periodontitis, pharyngitis and constipation. 2, gastrointestinal function is not good people take it easy, gastrointestinal function is not good people, eat too many oranges, prone to gastric fecal stone trouble. Excessive consumption of citrus fruits can cause “orange disease”, skin yellowing and other symptoms. 3, oranges and milk should not be eaten together, the protein in the milk is easy to react with the oranges in the fruit acid and vitamin C, solidified into a block, not only affect the digestion and absorption, but also cause bloating, abdominal pain, diarrhea and other symptoms, should be drunk in the milk 1 hour before eating oranges. In addition, the gastrointestinal, kidney and lung function cold people should not eat more, so as not to induce abdominal pain, lumbar and knee weakness and other symptoms. 4, should not be eaten with radish, radish into the body, will quickly produce a substance called sulfate, and soon metabolized to produce an anti-thyroid substance – thiocyanic acid. If you eat oranges at this time, the flavonoids in oranges will be broken down in the intestine and converted into hydroxybenzoic acid and ferulic acid, which can strengthen the inhibitory effect of thiocyanic acid on the thyroid gland, thus triggering or causing goiter. 5, taking drugs avoid eating oranges, oranges are rich in fruit acids and vitamin C, taking vitamin K, sulfonamides, amphetamines, aminoglutethimide and potassium drugs, should avoid eating oranges. 6, avoid fresh orange peel tea drink, after picking most of the oranges soaked with preservatives and then listed, preservatives for a chemical agent, soaked oranges have no effect on the flesh, but the residual preservatives on the orange peel is difficult to wash off with water, if the orange peel with such a tea drink, damaging to health.