Why is morning urine dark?

Morning urine color is relatively dark, mainly caused by urine concentration, is due to night rest when you can not drink water, resulting in urine concentration, and the human body after a night of metabolism, urine color will be dark in the morning, is a normal physiological phenomenon, do not worry. As long as the subsequent intake of enough water required by the human body, urine will return to normal. Of course, if the urine has been showing a relatively dark color, after a large amount of hydration, still has not changed, it is necessary to consider the possibility of urinary tract infections and other urinary system diseases. For this situation, it is recommended that patients must go to the urology department of the regular hospital in time for urine routine examination to clarify whether there are urinary system diseases, so symptomatic treatment.