1, calcium and milk should not be eaten together: this is because the mixing of calcium and milk may lead to macromolecular colloid denaturation in milk, forming flocculent precipitation, which will affect the nutritional quality of milk. In addition, milk is a neutralizer, which can combine with many drug molecules and reduce the curative effect of drugs. At the same time, milk will affect the absorption rate of drugs, which is not conducive to the treatment of diseases. 2, taking calcium, should be taken after meals 1- 1.5 hours, not immediately after meals, let alone with food. Because many foods contain phytic acid, this substance will affect the absorption of calcium in the intestine, and soap calcium will be formed when there is too much fat, further reducing the absorption of calcium. At the same time, oxalic acid, fatty acids produced by dietary fiber decomposition, etc. Both affect the absorption of calcium. If you take calcium tablets once a day, you'd better take them before going to bed. Because the blood calcium level of human body is the lowest in the middle of the night, calcium supplementation is beneficial to calcium absorption at this time. Pay attention to drinking milk: 1. It is best to drink milk with some starchy foods, such as steamed bread, bread, corn porridge and beans, which are beneficial to digestion and absorption. Milk with mushrooms, celery and tremella is healthy. 2. Milk should not be drunk with the following foods at the same time: 1) Fruit juice-acidic drinks such as fruit juice will make protein in milk agglutinate and precipitate, which is difficult to digest and absorb, and even lead to indigestion or diarrhea in severe cases. 2) Tea-Tannic acid in tea will hinder the absorption of calcium ions in milk. 3) Eating milk with foods containing oxalic acid (such as spinach) will affect the absorption of calcium by human body. 4) Sugar-lysine contained in milk and milk can react with fructose under heating conditions to generate toxic fructosyl lysine, which is harmful to human body. Don't add sugar when milk is boiled. After the boiled milk cools slightly, add sugar. 5) Milk and chocolate-Milk is rich in protein and calcium, while chocolate contains oxalic acid, which will combine with food to form insoluble calcium oxalate, greatly affecting the absorption of calcium.