Can oranges and milk be consumed together?
Generally speaking, oranges and milk can be consumed together, but it is not recommended to consume them in large quantities. The detailed explanation is as follows:

Oranges are rich in vitamin C, citric acid, dietary fiber, and various minerals. These components play significant roles in enhancing immunity, promoting digestion, and maintaining electrolyte balance. Milk is rich in nutrients such as protein, calcium, vitamin D, and various amino acids. The protein in milk is an essential component of human tissues and organs, while calcium is a crucial element for maintaining bone health.
When the citric acid in oranges meets the protein in milk, a chemical reaction might occur, forming precipitates that are difficult to digest. These precipitates may not only reduce the efficiency of digestion and nutrient absorption but also increase the burden on the gastrointestinal tract. Consuming large amounts of oranges and milk together may cause citric acid to interfere with the absorption and utilization of calcium in milk, thereby reducing its nutritional value.
When consuming oranges and milk, it is recommended to control the quantity and avoid excessive intake. Additionally, it is advisable to eat oranges first, wait until they are digested and absorbed, and then drink milk, or wait for a period of time before consuming milk, in order to reduce direct contact and chemical reactions between citric acid and protein.