Three oranges a day are sufficient to meet the daily requirement for vitamin C, and eating more can actually be harmful to the mouth and teeth. There is a proper way to eat oranges: do not eat them with radishes.
Oranges contain carotene. If consumed in excess, the amount in the blood will surge and accumulate in the skin, causing the skin on areas with abundant subcutaneous fat, such as the palms, fingers, soles of the feet, nasolabial folds, and the edges of the nostrils, to turn yellow.
Traditional Chinese medicine believes that oranges are "warm" in nature, and eating too many can easily lead to "internal heat," causing symptoms such as canker sores, dry mouth and throat, a sore throat, and constipation.
Because the pulp of oranges contains certain organic acids, it is best not to eat them on an empty stomach to avoid irritating the gastric mucosa and causing discomfort.
In addition, oranges should not be eaten with radishes. This means you should not eat oranges immediately after eating white radishes. If the two are frequently consumed together, it can induce or lead to goiter.
Oranges are also not suitable to be eaten with milk, as the citric acid in oranges will cause the protein in milk to coagulate. This not only affects absorption but, in severe cases, can also lead to symptoms such as bloating, abdominal pain, and diarrhea. Therefore, you should wait for 1 hour after drinking milk before eating oranges.