Can diabetic kidney disease be reversed?

Established scarring is not reversible, but the earliest stage, where small amounts of albumin are leaking into the urine, can improve substantially with treatment, and in some patients the albumin level returns to normal. Even where it does not, slowing the rate of decline is a meaningful result.

How often should my kidneys be checked if I have diabetes?

At least once a year for both urine albumin and estimated GFR, and more frequently if either result is abnormal or if you are starting or adjusting a medication that affects kidney function.

Does good blood sugar control alone protect my kidneys?

It helps considerably but it is not sufficient on its own. Blood pressure control and kidney-protective medications add benefit beyond glucose management, which is why the treatment plan addresses all of them together.

Diabetic Kidney Disease

Protecting kidney function when you have diabetes

The first sign of kidney trouble in diabetes shows up in the urine years before creatinine moves, which is exactly why annual screening is worth insisting on.

Last updated August 28, 2026

What is diabetic kidney disease?

Diabetes is the leading cause of kidney failure in the United States. Persistently high blood sugar damages the small blood vessels that make up the kidneys' filtering units, a process that usually unfolds slowly over many years. The earliest detectable sign is a small amount of albumin appearing in the urine, often long before the standard kidney blood test changes at all. Caught at that stage, the course of the disease can be altered substantially.

How does diabetes injure the kidneys?

Each kidney contains around a million tiny filtering units, and each one depends on a dense network of small blood vessels. Sustained high glucose thickens and stiffens those vessels, so they filter less efficiently and begin to leak protein that should stay in the blood. High blood pressure, which very often accompanies diabetes, accelerates the same process.

Diabetes also affects the nerves controlling the bladder. When the bladder does not empty properly, urine backs up and adds pressure on the kidneys, and infections become more likely. Both type 1 and type 2 diabetes carry kidney risk, though the timing differs.

How is diabetic kidney disease caught early?

Everyone living with diabetes should have two tests at least once a year: a urine albumin-to-creatinine ratio and an estimated GFR from a blood sample. The urine test is the sensitive one. A rising albumin level is the signal that treatment needs to change, and it typically appears years before the blood test shifts.

A raised result on a single sample is repeated before conclusions are drawn, since exercise, fever, and infection can all temporarily push it up.

What treatment protects kidney function?

Several treatments have been shown to slow diabetic kidney disease, and they work best in combination rather than one at a time.

Blood sugar management to an individualized target
Blood pressure control, usually with an ACE inhibitor or ARB when protein is present in the urine
SGLT2 inhibitors, which protect kidney function in diabetic kidney disease independently of their effect on glucose
GLP-1 receptor agonists, where appropriate for your overall diabetes management
A non-steroidal mineralocorticoid receptor antagonist such as finerenone in selected patients with persistent albuminuria
Cholesterol management and stopping smoking, both of which affect kidney as well as cardiovascular risk

How does nephrology work with the rest of your care team?

Diabetic kidney disease sits between several specialties. Nephrology care here is coordinated with your primary care physician and your endocrinologist so that medication changes on one side do not undo work on the other, and so you are not left reconciling conflicting advice yourself.

When should you ask for a nephrology referral?

Any of the following is a reasonable reason to be seen. If you are unsure, call the office and we will help you work out whether an appointment makes sense.

A urine albumin-to-creatinine ratio that is rising over successive tests
An eGFR below 60 in someone with diabetes
Blood pressure that is difficult to control alongside diabetes
A rapid fall in kidney function over months rather than years
Uncertainty about whether a diabetes medication is safe at your level of kidney function

Common questions

Can diabetic kidney disease be reversed?: Established scarring is not reversible, but the earliest stage, where small amounts of albumin are leaking into the urine, can improve substantially with treatment, and in some patients the albumin level returns to normal. Even where it does not, slowing the rate of decline is a meaningful result.
How often should my kidneys be checked if I have diabetes?: At least once a year for both urine albumin and estimated GFR, and more frequently if either result is abnormal or if you are starting or adjusting a medication that affects kidney function.
Does good blood sugar control alone protect my kidneys?: It helps considerably but it is not sufficient on its own. Blood pressure control and kidney-protective medications add benefit beyond glucose management, which is why the treatment plan addresses all of them together.