4. Diabetes mellitus.
Diabetes mellitus, also known as type 1 or type 2 diabetes, can cause frequent urination. Under normal conditions, when you consume carbohydrates, they are turned into glucose, a form of sugar. That sugar is then sent through the bloodstream and the pancreas releases a hormone known as insulin, which transports the glucose from your bloodstream into the cells of your body. The cells use glucose for energy.
In type 1 diabetes, the pancreas doesn’t produce insulin. In type 2 diabetes, the pancreas produces insulin, but it either doesn’t create enough or the body doesn’t use it correctly. Both types of diabetes are marked by high blood sugar. The kidneys attempt to filter out the excess sugar in the bloodstream and the sugar can end up being transported into the urine. As a result, more water is drawn from the body, which leads to increased urine production.