If you have diabetes, your blood sugar levels are too high. Over time, this can damage your kidneys. Your kidneys are filters that clean your blood. If they are damaged, waste and fluids build up in your blood instead of leaving your body.
Kidney damage from diabetes is called diabetic nephropathy. It begins long before you have symptoms. An early sign of it is small amounts of protein in your urine. A urine test can detect it. A blood test can also help determine how well your kidneys are working.
If the damage continues, your kidneys could fail. In fact, diabetes is the most common cause of kidney failure not just in the United States but in most countries all over the world. People with kidney failure need either dialysis or a kidney transplant.
You can slow down kidney damage or keep it from getting worse by controlling your blood sugar, controlling your blood pressure, taking your medication and not eating too much protein.