Every month we send some of your biggest questions about nutrition, health and more to our panel of experts. The question: "Why do I pee a thousand times after having a drink in the morning and no, I'm not pregnant," said Keri Peterson, MD, Internal Medicine, Lenox Hill Hospital in New York City.
At night, your kidneys filter less urine, and your bladder relaxes and holds back more. In addition, a hormone called vasopressin tells the cells to hold water. So considering these factors, it is not surprising that your bladder is pretty full in the morning. So, is your first liquid a cup of coffee? Beverages containing caffeine may have a diuretic effect.