Oranges should not be eaten before and after drinking milk 1 hour.

Juice and milk

Protein in milk is 80% casein. When the pH of milk is below 4.6, a large amount of casein will agglutinate and precipitate, which is difficult to digest and absorb, and even lead to indigestion or diarrhea.

Milk and sugar

Lysine contained in milk can react with fructose under heating conditions to produce toxic fructosyl lysine, which is harmful to human body. Do not add sugar to fresh milk when boiling, and add sugar after the milk is cooked and cooled.

Milk and chocolate

Milk is rich in protein and calcium, while chocolate contains oxalic acid. When they are eaten together, they will combine to form insoluble calcium oxalate, which greatly affects the absorption of calcium, and even causes hair dryness, diarrhea and slow growth.

Milk and medicine

Some people like to take medicine with milk instead of boiled water. In fact, milk will obviously affect the body's absorption of drugs.