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Why does diabetes cause frequent urination?

People with diabetes may urinate as much as 20 times a day, with a full bladder every time. When you have extra glucose in your blood, due to diabetes, your kidneys work overtime to get rid of it. As this happens, the extra glucose soaks up water everywhere in your body, causing you to urinate more often. Frequent urination causes your body to become dehydrated -- and you end up feeling very thirsty.

Diabetes occurs when the body has too much sugar and can't control it; the body gets rid of the extra sugar by making more urine to flush it out. Watch urologist Harry Fisch, MD, explain how and why frequent urination is a symptom of diabetes.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.