Should pregnant women drink more milk in the second trimester?

　　Based on a calcium absorption rate of 50%, 1,000 milligrams per day is needed in the second trimester and 1,200 milligrams per day in the third trimester. This amount is difficult to meet through food intake alone. However, if the mother's calcium intake is insufficient, the fetus will take it from the mother's bone marrow and teeth in order to meet its own growth and development needs. This will cause the mother's blood calcium to decrease, and it is prone to calf cramps or tetany. But in real life, there are many factors that affect the absorption of calcium by pregnant women. If some vegetables contain a large amount of oxalic acid, it will form insoluble calcium oxalate after combining with calcium, which will affect the absorption of calcium. ； Phytic acid in cereals is also detrimental to calcium absorption ； If fat is consumed in excess, the formation of insoluble saponified substances will also reduce calcium absorption.

　　Therefore, drinking milk has become a good way to supplement calcium. Every 100 grams of milk contains about 120 mg of calcium. The calcium in milk is most easily absorbed by pregnant women, and the combination of various inorganic salts such as phosphorus, potassium, and magnesium in milk is also very reasonable. In addition, pregnant women who drink a glass of milk every day will increase the weight of their fetus by about 41 grams on average. Therefore, the best way for pregnant women to supplement calcium in the second trimester is to drink 200-500 grams of milk every day.