03/08/2026
World Hepatitis Day
Silent Liver Disease: Why Many Patients Don't Know They Are Infected
The liver is often called the "silent organ" because liver disease can develop quietly over many years without causing obvious symptoms. Unlike many other organs in the body, the liver has an extraordinary ability to compensate for injury and continue performing its essential functions despite ongoing damage. As a result, many people with chronic liver disease feel perfectly healthy and continue with their daily lives, unaware that inflammation and scarring are slowly progressing inside their liver.
For patients with chronic hepatitis B or hepatitis C, it is not uncommon to remain symptom-free for 20 to 30 years. Unfortunately, by the time warning signs such as jaundice (yellowing of the skin and eyes), abdominal swelling, vomiting blood, or confusion appear, the liver has often sustained irreversible damage. This is why liver disease is frequently diagnosed only when complications such as liver cirrhosis or liver cancer have already developed.
Every year on 28 July, the world observes World Hepatitis Day, an important global health campaign dedicated to raising awareness of viral hepatitis. The message is simple yet powerful: Know your status. Get tested. Get treated. Early diagnosis allows treatment before permanent liver damage occurs and has the potential to save countless lives.
Why Is the Liver Called the Silent Organ?
The liver is one of the largest and hardest-working organs in the human body. It performs more than 500 vital functions, including:
Filtering toxins from the bloodstream
Producing bile to aid digestion
Storing vitamins and minerals
Regulating blood sugar
Producing proteins necessary for blood clotting
Processing medications
Supporting the body's immune system
Unlike the skin or stomach, the liver contains relatively few pain-sensitive nerves. Furthermore, it possesses an impressive ability to regenerate itself after injury. Even when a considerable portion of the liver is damaged, the remaining healthy liver tissue can continue to function adequately.
Because of these unique characteristics, liver disease often progresses silently. Patients may not experience pain or any noticeable symptoms until more than half of the liver has been affected.
Why Do So Many Patients Not Know That They Are Infected?
One of the greatest challenges in liver medicine is that most patients with chronic hepatitis B or hepatitis C feel completely well.
Many people mistakenly believe that if they have no symptoms, they must be healthy. Unfortunately, this is not always true.
The viruses continue to multiply quietly inside the liver, causing chronic inflammation. Over many years, this persistent inflammation gradually replaces healthy liver tissue with scar tissue, a process known as fibrosis. As fibrosis worsens, it eventually progresses to cirrhosis, where the liver becomes permanently scarred and loses its ability to function normally.
Throughout this entire process, patients may notice nothing more than occasional tiredness or reduced energy, symptoms that are often attributed to work stress, ageing, or lack of sleep.
Others discover they have hepatitis only after:
A routine medical check-up
Blood donation screening
Pre-employment medical examination
Pregnancy screening
Investigation for abnormal liver function tests
Health screening organised by their employer
Sadly, some individuals remain unaware until they present with liver failure or liver cancer.
What Is Hepatitis?
Hepatitis simply means inflammation of the liver. Although viruses are the best-known cause, hepatitis may also result from:
Viral infections
Excessive alcohol consumption
Fatty liver disease related to obesity and diabetes
Autoimmune diseases
Certain medications
Toxic herbal or traditional remedies
The five major hepatitis viruses are:
Hepatitis A
Hepatitis B
Hepatitis C
Hepatitis D
Hepatitis E
HepatitisA and E are usually spread through contaminated food and water. These infections generally cause acute illness, and most patients recover completely.
Hepatitis B, C, and D are spread through infected blood and body fluids, including s*xual contact, sharing contaminated needles, and transmission from an infected mother to her baby during childbirth.
Among these viruses, hepatitis B and hepatitis C are the leading causes of chronic hepatitis, liver cirrhosis, and liver cancer worldwide.
The Silent Progression of Liver Disease
One reason hepatitis is so dangerous is that liver damage develops slowly.
The progression often follows this sequence:
Healthy liver → Chronic hepatitis → Liver fibrosis → Liver cirrhosis → Liver cancer
This process may take decades.
The longer inflammation continues, the greater the amount of scar tissue that develops. Once cirrhosis occurs, the risk of liver failure and liver cancer rises substantially.
Importantly, liver cancer can develop even before symptoms appear, highlighting why screening and surveillance are so important.
Warning Signs That Should Never Be Ignored
Most patients experience no symptoms during the early stages. However, warning signs may eventually include:
Persistent fatigue
Poor appetite
Nausea and vomiting
Yellowing of the skin and eyes (jaundice)
Dark or tea-coloured urine
Pale stools
Itchy skin
Pain or discomfort over the right upper abdomen
Fever
Skin rash
Unexplained weight loss
Swollen abdomen (ascites)
Swollen legs
Vomiting blood or passing black stools
Confusion or excessive sleepiness due to hepatic encephalopathy
These symptoms require prompt medical evaluation.
Who Should Be Tested?
Because hepatitis is frequently silent, screening is often more important than waiting for symptoms.
You should consider hepatitis B and C screening if you:
Have never been tested
Have a family member with hepatitis B or C
Were born to a mother with hepatitis B
Received blood transfusions before routine screening became available
Have diabetes or chronic liver disease
Have abnormal liver function tests
Have multiple s*xual partners
Have ever shared needles
Have tattoos or body piercings performed under uncertain hygienic conditions
Are a healthcare worker with occupational exposure
Live with someone who has chronic hepatitis B
A simple blood test is often all that is required to determine your hepatitis status.
Blood Tests and Liver Assessment
Your doctor may recommend:
Hepatitis B surface antigen (HBsAg)
Hepatitis B antibody testing
Hepatitis C antibody testing
Liver function tests (ALT, AST)
Platelet count
Liver ultrasound
FibroScan® or other liver fibrosis assessment
CT scan or MRI if indicated
These investigations help detect liver disease before symptoms develop and guide appropriate treatment.
The Three Major Causes of Liver Disease
Viral Hepatitis
Worldwide, hepatitis B and hepatitis C remain among the leading causes of liver-related deaths. Fortunately, effective antiviral medications can suppress hepatitis B and cure hepatitis C in the vast majority of patients.
Alcohol
Excessive alcohol damages liver cells directly. Over time, repeated injury causes fatty liver, alcoholic hepatitis, fibrosis, cirrhosis, and eventually liver failure.
Obesity and Fatty Liver Disease
Modern lifestyles have led to a dramatic increase in obesity and diabetes. Many people now develop metabolic dysfunction-associated steatotic liver disease (MASLD). Some patients progress to metabolic dysfunction-associated steatohepatitis (MASH), where ongoing inflammation leads to liver fibrosis, cirrhosis, and liver cancer.
Can Hepatitis Be Prevented?
Absolutely. Many liver diseases are preventable through healthy lifestyle choices and vaccination. You can reduce your risk by:
Receiving hepatitis A and hepatitis B vaccination
Practising safe s*x
Never sharing needles
Ensuring tattoos and piercings are performed with sterile equipment
Practising good hand hygiene
Drinking clean water and eating properly prepared food
Maintaining a healthy body weight
Exercising regularly
Limiting alcohol intake
Controlling diabetes and cholesterol
Avoiding unregulated herbal and traditional medicines that may damage the liver
The Good News: Early Detection Saves Lives
There has never been a better time to diagnose hepatitis. Today:
Hepatitis B can be effectively controlled with antiviral medications, reducing the risk of cirrhosis and liver cancer.
Hepatitis C is now curable in more than 95% of patients with short courses of direct-acting antiviral therapy.
Patients with cirrhosis can be monitored regularly so that liver cancer can be detected early, when curative treatment is still possible.
The earlier hepatitis is diagnosed, the better the long-term outcome.
Take-Home Message
Liver disease is often called a silent disease because it may cause little or no discomfort until it reaches an advanced stage. Many patients with hepatitis B or hepatitis C remain unaware of their infection for decades while ongoing inflammation quietly damages the liver.
The good news is that early detection changes everything. Simple blood tests can identify hepatitis before symptoms appear. Vaccination can prevent hepatitis A and B, while modern antiviral therapies can effectively control hepatitis B and cure most cases of hepatitis C.
This World Hepatitis Day, do not wait for symptoms. Know your hepatitis status. Encourage your family members to get tested if they are at risk. Seek medical advice if you have abnormal liver tests or risk factors for liver disease.
Your liver works tirelessly for you every day. Protect it through prevention, screening, and early treatment — because when liver disease is found early, lives can be saved.
