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Breathlessness at rest, chest pain or confusion needs emergency care now. Also seek urgent care for a foot ulcer with fever or spreading redness, which can progress rapidly in diabetes.

Home  /  Treatments  /  Organ transplant  /  Diabetic kidney disease

Diabetic kidney disease

The commonest cause of kidney failure worldwide. Damage develops silently over years, and by the time symptoms appear a great deal of function has already gone — but the decline can be slowed substantially.

If you have diabetes and protein in your urine, this page is about buying you years. The medication now available for this is considerably better than it was a decade ago and is frequently not prescribed.

First sign
Protein in urine
Long before creatinine rises
Now available
Better medication
SGLT2 inhibitors and others slow decline
Biggest risk
The heart
Not the kidneys, in most diabetic patients
Transplant
Very possible
With careful cardiac assessment first
The condition

What diabetic kidney disease is

Persistently high blood glucose damages the tiny filtering units of the kidney over years. The earliest detectable sign is small amounts of protein leaking into the urine, long before the creatinine begins to rise or any symptom appears.

The progression is usually predictable — increasing protein loss, then rising blood pressure, then a gradual fall in filtration rate over years. That predictability is an opportunity: intervening early alters the trajectory substantially.

What has changed the picture is medication. Blood pressure drugs that block the renin-angiotensin system have long been standard. More recently, SGLT2 inhibitors have been shown to slow the decline in kidney function meaningfully in diabetic kidney disease, and they also reduce heart failure. They are frequently not prescribed to patients who would benefit.

The other thing to understand is that most people with diabetic kidney disease die of heart disease rather than reaching dialysis. Cardiovascular risk management — blood pressure, cholesterol, stopping smoking — is not a side issue but a central part of treating the kidneys.

Symptoms

Symptoms and warning signs

Common symptoms

  • Usually none in the early stages — it is found on testing
  • Frothy urine from protein loss
  • Swelling of the ankles, legs or around the eyes
  • Rising blood pressure or worsening control
  • Fatigue and breathlessness as anaemia develops
  • Reduced insulin requirement, which can be a sign of declining kidney function
  • Poor appetite and nausea in advanced disease

Warning signs of an emergency

  • Breathlessness at rest or unable to lie flat
  • Chest pain or palpitations
  • Confusion or drowsiness
  • A foot ulcer with fever or spreading redness
  • Rapid rise in creatinine over weeks
  • Sudden severe reduction in urine output

Ask whether you should be on an SGLT2 inhibitor

These medications, originally developed for glucose control, have been shown to slow the decline of kidney function in diabetic kidney disease and to reduce heart failure and cardiovascular death. They are recommended in current guidelines for most patients with diabetic kidney disease and protein in the urine, and yet a great many eligible patients are not taking one. Alongside a blood pressure drug that blocks the renin-angiotensin system, this combination is the most effective thing available for preserving your remaining kidney function. It is worth asking your doctor about specifically.

Diagnosis

How it is diagnosed

Simple tests, done regularly, detect this years before symptoms.

Initial tests

  • Urine albumin to creatinine ratio — the earliest marker, and it should be checked annually in everyone with diabetes
  • Creatinine and eGFR — tracked over time to see the trend rather than a single value
  • HbA1c — average glucose control over the preceding months
  • Blood pressure — measured properly, and treated to target

The deciding tests

  • Kidney ultrasound — excludes obstruction and other causes
  • Lipid profile and cardiac assessment — because cardiovascular disease is the greater threat
  • Eye examination — diabetic retinopathy usually accompanies diabetic kidney disease, and its absence should prompt a search for another cause
  • Kidney biopsy — where the pattern is atypical, particularly if there is no retinopathy

Send several creatinine results, not one

A single creatinine tells us where you are; a series over months or years tells us where you are going, and the rate of decline determines how long you have before dialysis or transplant. Send them with dates, along with your urine albumin ratio, HbA1c, blood pressure readings and your current medication list. Whether you are on the right drugs is the first thing we will look at.

Options

Treatment options

Slowing the decline is the treatment, and it works better than most patients are told.

First

Kidney-protective medication

A blood pressure drug blocking the renin-angiotensin system, plus an SGLT2 inhibitor where eligible, and in selected patients a non-steroidal mineralocorticoid receptor antagonist. This combination slows the loss of kidney function meaningfully and reduces cardiovascular events. It is inexpensive relative to dialysis and widely available.

Usually appropriate whenFor most patients with diabetic kidney disease and protein in the urine.
Alongside

Glucose, blood pressure and cholesterol control

Tight blood pressure control is the single most effective measure. Good glucose control slows progression, particularly early. Statins reduce the cardiovascular risk that is more likely to kill you than the kidney disease. Stopping smoking matters as much as any drug.

Usually appropriate whenAlways, at every stage.
Option three

Kidney transplant

Diabetic patients are transplanted successfully and routinely, and it remains far better than dialysis for them. The important difference is that cardiac assessment before transplant must be thorough, because coronary disease is common and frequently silent in diabetes. Diabetes control after transplant also needs attention, since steroids raise glucose.

Usually appropriate whenEnd-stage kidney disease, ideally assessed before dialysis begins, with a suitable near-relative donor.
Option four

Dialysis

Where transplant is not possible, dialysis sustains life. Diabetic patients on dialysis need particular attention to foot care, vascular access, blood pressure during sessions and glucose control, all of which are more difficult than in non-diabetic patients.

Usually appropriate whenEnd-stage disease without an eligible donor, or while transplant is arranged.
The decision

How the choice is made

Are you on the right medication

This is the first question and frequently the answer. Many patients are missing drugs that would slow their decline substantially.

Rate of decline

The trend in eGFR over time predicts when dialysis or transplant will be needed and sets the planning timeline.

Cardiac fitness

Coronary disease is common and often silent in diabetes. Thorough cardiac assessment is essential before transplant and is where Dr. Varughese's involvement genuinely matters.

Before any transplant discussion we will look at whether your medication is optimised. Adding the right drugs can delay dialysis by years, and it costs a fraction of a transplant.

Urgency

How urgent is your case

Usually safe to plan travel

  • Stable kidney function on treatment
  • Protein loss controlled
  • Blood pressure and glucose at target
  • Planning transplant assessment electively

Needs local assessment before travel

  • Breathlessness at rest or fluid overload
  • Chest pain — possible silent coronary disease
  • Foot ulcer with fever or spreading redness
  • Rapid rise in creatinine over weeks
  • Confusion or drowsiness

We will tell you which column you are in

Chest symptoms in a diabetic patient with kidney disease need urgent local assessment. Coronary disease is common, frequently silent, and the leading cause of death in this group.

Next step

What to send us

Photographs taken on your phone are fine. Reports in Arabic, Russian or Bengali are fine — we translate them ourselves.

Most useful

  • Creatinine and eGFR results over time, with dates
  • Urine albumin to creatinine ratio
  • HbA1c and blood pressure readings
  • Your full current medication list with doses

Also helpful

  • Lipid profile and full blood count
  • Kidney ultrasound report
  • Eye examination findings
  • Any cardiac assessment — ECG, echocardiogram or angiogram
Questions

Questions patients ask

Established scarring cannot be reversed, but the rate of decline can be slowed substantially — often by years. Kidney-protective medication, tight blood pressure control, good glucose control and stopping smoking together make a considerable difference. The earlier this starts, the more function is preserved.

A class of tablet originally developed for glucose control that has been shown to slow the loss of kidney function in diabetic kidney disease and to reduce heart failure. Current guidelines recommend it for most patients with diabetic kidney disease and protein in the urine, yet many eligible patients are not on one. It is worth asking your doctor directly.

Because albumin in the urine is the earliest sign of kidney damage in diabetes, appearing years before creatinine rises or any symptom develops. It is a cheap annual test that identifies the problem at the stage when treatment does the most good. Everyone with diabetes should have it checked yearly.

Yes, routinely, and it remains far better than dialysis. The important difference is that cardiac assessment beforehand must be thorough, because coronary disease is common in diabetes and frequently causes no symptoms. Glucose control after transplant also needs attention, since the steroids used raise blood sugar.

Not necessarily. As kidney function declines, insulin is cleared more slowly and requirements fall, which can look like improving diabetes but may signal worsening kidney function. If your insulin needs have dropped without a change in diet or weight, have your kidney function checked.

Because most people with diabetic kidney disease are more likely to be harmed by heart disease than to reach dialysis, and coronary disease in diabetes is frequently silent. Treating cardiovascular risk is part of treating the kidneys, not a separate matter, and cardiac fitness determines whether transplant is safe.

Contact

Send us your reports

Send several creatinine results with dates so we can see the trend, plus your urine albumin ratio and full medication list. Whether you are on the right drugs is the first thing we check.

Your reports go directly to our medical team. We do not share your records with hospitals until you tell us to.

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