Dr Alvin Ng
Senior Consultant Nephrologist

Bachelor of Medicine and Surgery (Auckland, New Zealand)
Fellow of the Royal Australasian College of Physicians
Fellow of the Academy of Medicine, Singapore (Renal Medicine)

What Is Diabetic Nephropathy?

Diabetic nephropathy, also known as diabetic kidney disease (DKD), develops as a complication of diabetes. This condition is one of the leading causes of chronic kidney disease and kidney failure worldwide. It typically develops over many years, often without noticeable symptoms in the early stages. Without proper management, diabetic nephropathy can progress to end-stage kidney disease, where dialysis or a kidney transplant may be required.

Diabetic nephropathy can affect individuals with both type 1 and type 2 diabetes, particularly when blood sugar levels and blood pressure are not well controlled.

Why Does Diabetes Negatively Affect the Kidneys?

Diabetic nephropathy occurs when persistently high blood sugar levels damage the tiny filtering units in the kidneys, known as the glomeruli. These structures play a crucial role in filtering waste and excess fluid from the blood while retaining essential proteins.

Over time, prolonged exposure to high glucose levels causes the glomeruli to become thickened and scarred. This disrupts their normal filtering function, allowing protein to leak into the urine and reducing the kidneys’ ability to effectively remove toxins from the body.

As the damage progresses, kidney function gradually declines, potentially leading to chronic kidney disease and, in advanced stages, kidney failure.

Who Is at Risk of Developing Diabetic Nephropathy?

While diabetic nephropathy is a risk for anyone who is affected by diabetes, some people are more likely to develop it than others, depending on risk factors and lifestyle choices:

Individuals with poorly controlled blood sugar levels
People with high blood pressure
Those with a family history of kidney disease
Individuals who are overweight or obese
Smokers
Older adults

How Does Diabetic Nephropathy Progress?

In its early stages, the condition may not cause noticeable symptoms, which is why regular screening is important for people with diabetes. As kidney damage worsens, signs and complications become more apparent.

Early Signs and Symptoms

In the early stages, diabetic nephropathy is often silent. The first detectable changes are usually microalbuminuria, a condition where small amounts of protein can be found in the urine, and a slightly increased need for urination. These early signs are subtle, making routine urine and blood tests essential for diabetic patients with risk factors of DKD.

Progressive Symptoms

As the condition advances, symptoms become more noticeable as kidney function declines.

Foamy urine caused by increased protein leakage
Swelling (oedema ) in the legs, ankles, feet or around the eyes
Fatigue due to toxin buildup and reduced kidney function
Loss of appetite or nausea as waste accumulates in the body
Difficulty concentrating due to imbalances in the bloodstream

What Happens if Diabetic Nephropathy Is Not Treated?

Without proper management, kidney damage can progressively worsen and lead to more serious health complications.

Kidney function gradually declines, reducing the ability to filter waste and excess fluids from the body
High blood pressure develops or worsens, further accelerating kidney damage
Protein leakage in the urine increases as kidney damage becomes more severe
Chronic kidney disease (CKD) develops, representing a long-term and irreversible loss of kidney function
End-stage kidney disease (ESKD) can occur, where the kidneys fail completely, and dialysis or a kidney transplant is required

How Fast Does Diabetic Nephropathy Progress?

The rate of progression varies from person to person. Some individuals may experience slow decline over decades, while others may progress more rapidly, especially if blood sugar and blood pressure are not well controlled.

Early diagnosis and consistent management play a key role in slowing disease progression and preserving kidney function.

Treatment and Management Options for Diabetic Nephropathy

While diabetic nephropathy cannot be reversed, early and consistent management can help slow disease progression and reduce the risk of complications. Treatment focuses on protecting kidney function and addressing underlying risk factors.

Some key components of a diabetic nephropathy management plan are:

Carrying out tight control of blood sugar levels to reduce ongoing damage to the kidneys
Managing blood pressure, often with kidney-protective medications such as ACE inhibitors or ARBs
Using medications to reduce protein leakage in the urine
Regular monitoring of kidney function through blood and urine tests
Lifestyle modifications such as maintaining a healthy weight and stopping smoking
Enforcing dietary adjustments, including limiting salt intake and moderating protein consumption

Why Early Specialist Intervention Matters

Early specialist care allows diabetic nephropathy to be detected and managed before significant kidney damage occurs. With timely intervention, progression can be slowed and complications reduced.

If you have diabetes or concerns about your kidney health, consult a doctor promptly for proper evaluation. A specialist-led approach supports accurate diagnosis, ongoing monitoring and a personalised treatment plan.

At The Kidney Health Care Clinic, we are committed to delivering attentive, patient-centred care tailored to each individual. Under the guidance of Dr Alvin Ng, senior consultant nephrologist, every treatment plan is carefully customised to suit each patient’s medical condition, daily routine and long-term health goals, ensuring a more personalised approach to symptom management in diabetes patients.

Meet Our Kidney Specialist in Singapore

Dr Alvin Ng Kok Heong
Senior Consultant Nephrologist
MBChB (Auckland), FRACP (Aus), FAMS (Renal Medicine)

Dr Alvin Ng is a nephrologist and kidney specialist in Singapore with more than 20 years of experience. He specialises in managing a wide range of kidney conditions and is dedicated to providing comprehensive, personalised and evidence-based care for patients with kidney disease.

Dr Ng obtained his Bachelor of Medicine and Surgery from the University of Auckland in 2002 and completed his nephrology training in New Zealand. He was admitted as a Fellow of the Royal Australasian College of Physicians in 2010. Prior to private practice, he served as a Consultant Nephrologist at North Shore Hospital, Auckland, from 2010 before joining the Department of Renal Medicine at Changi General Hospital (CGH) in 2012.

Throughout his career in public healthcare, Dr Alvin Ng held several leadership positions within the nephrology community and received numerous awards in recognition of his service and dedication as a kidney specialist.

Understanding Diabetic Nephropathy