Drinking milk before bedtime is bad. Because milk is rich in protein and calcium, drink 2 to 3 hours after the peak period of calcium excretion of the kidneys, but at this time the concentration of calcium in the urine is relatively high, it is easy to cause its combination with the urinary oxalic acid and other substances, thus forming urinary tract stones.

Drinking milk before going to bed at night, the calcium in the milk can be slowly absorbed by the blood, the whole night the blood calcium has been supplemented to maintain the balance, do not have to dissolve the calcium in the bone, to prevent bone loss, osteoporosis, so drink milk before going to bed is good.