Diabetic kidney disease (also called diabetic nephropathy) is kidney damage caused by long-standing diabetes. It develops silently, but regular screening and modern treatments can help protect the kidneys. Dr. Satarupa Deb provides specialised care for diabetic kidney disease at Bombay Hospital, South Mumbai.
What Is Diabetic Kidney Disease?
Over time, high blood sugar can damage the small blood vessels and filters of the kidneys. The earliest sign is usually a small amount of albumin in the urine. If not addressed, protein leakage may increase and kidney function may gradually decline.
Diabetes is one of the most common causes of chronic kidney disease and kidney failure in India. People with diabetic kidney disease also have a higher risk of heart disease and stroke, so care focuses on protecting both the kidneys and the heart.
The good news is that treatment options have improved considerably in recent years. Several newer medicines have been shown in large studies to slow kidney decline and reduce heart complications in people with diabetes and kidney disease, making early detection more valuable than ever.
Risk Factors
Not everyone with diabetes develops kidney disease. The risk may be higher with:
- Long duration of diabetes
- Poorly controlled blood sugar
- High blood pressure
- Smoking, obesity and high cholesterol
- A family history of kidney disease
- Diabetic eye disease (retinopathy)
Symptoms
Early diabetic kidney disease has no symptoms, which is why yearly testing matters. Later stages may cause:
- Swelling of the feet, ankles or face
- Frothy urine
- Rising blood pressure that is harder to control
- Tiredness, poor appetite, nausea or itching
- Frequent low blood sugar episodes, as the kidneys clear some diabetes medicines more slowly
Screening and Diagnosis
Everyone with type 2 diabetes should be screened at diagnosis and at least once a year, and people with type 1 diabetes from about five years after diagnosis.
- Urine albumin-to-creatinine ratio (UACR)
- Serum creatinine with eGFR
- HbA1c, lipid profile and blood pressure checks
- Kidney ultrasound when needed
- Kidney biopsy only if another kidney disease is suspected, such as blood in urine or a rapid decline without eye disease
Treatment of Diabetic Kidney Disease
Treatment aims to slow kidney damage and lower heart risk. It usually combines good blood sugar and blood pressure control with medicines proven to protect the kidneys. These may include ACE inhibitors or ARBs, SGLT2 inhibitors and, in suitable patients, other agents such as finerenone or GLP-1 receptor agonists, chosen by your doctor based on your kidney function and overall health.
Diabetes medicines often need adjustment as kidney function changes. Lifestyle measures such as reducing salt, healthy eating, regular activity, weight control and stopping smoking are important. Your nephrologist works with your diabetologist to coordinate care.
When to See a Nephrologist
Consult a nephrologist if you have diabetes with persistent albumin in the urine, an eGFR that is falling or below normal, difficult blood pressure control, or high potassium. Early specialist input may help delay progression.
Frequently Asked Questions
Can diabetic kidney disease be reversed?
In early stages, albumin in the urine may reduce with good control and kidney-protective medicines. Established kidney damage usually cannot be reversed, but progression can often be slowed.
Do I need to change my diabetes medicines if my kidneys are affected?
Possibly. Some diabetes medicines need dose changes or should be avoided when kidney function is reduced. Never change medicines on your own; your doctors will review them regularly.
Is a normal creatinine enough to rule out kidney disease?
No. Kidney damage from diabetes often shows first as albumin in the urine while creatinine is still normal. Both the urine albumin test and blood creatinine are needed.
What blood pressure should I aim for?
Targets are individualised. Many people with diabetes and kidney disease are advised to keep blood pressure lower than the general population, if tolerated. Your doctor will set a target that is safe for you.
Consult Dr. Satarupa Deb
If you have diabetes and are concerned about your kidneys, book a consultation with Dr. Satarupa Deb at Bombay Hospital, South Mumbai, for screening and a kidney-protection plan.
This page is for general information only and is not a substitute for a medical consultation. Please consult a qualified doctor for diagnosis and treatment.