These viruses can cause chronic inflammation and progressive liver damage. Over many years, chronic infection may lead to cirrhosis and increase the risk of hepatocellular carcinoma, the most common type of primary liver cancer.
Fortunately, hepatitis B can be prevented with vaccination, and modern treatments can effectively control hepatitis B and cure most hepatitis C infections.
Anyone at increased risk should discuss appropriate screening and testing with a healthcare professional.
2. Cirrhosis
Cirrhosis occurs when long-term liver injury causes extensive scarring.
It can result from several conditions, including chronic viral hepatitis, alcohol-associated liver disease, and metabolic dysfunction-associated steatotic liver disease.
Once significant cirrhosis develops, the risk of liver cancer increases.
This is one reason that preventing chronic liver damage is so important.
3. Excessive Alcohol Consumption
Heavy, long-term alcohol consumption can damage liver cells and contribute to inflammation, fatty liver disease, fibrosis, and cirrhosis.
For some people, reducing or eliminating alcohol can substantially reduce ongoing liver injury.
If someone regularly drinks heavily, suddenly stopping can sometimes be medically dangerous because alcohol withdrawal can be severe. Medical guidance may be appropriate when dependence is suspected.
4. Fatty Liver Disease and Metabolic Health
Liver disease isn't only associated with alcohol.
Excess body weight, insulin resistance, type 2 diabetes, and metabolic dysfunction can contribute to metabolic dysfunction-associated steatotic liver disease (MASLD).
In some people, liver fat can progress to inflammation and fibrosis. Advanced fibrosis or cirrhosis can increase the risk of liver cancer.
Maintaining a healthy body weight, staying physically active, eating a balanced diet, and managing blood sugar and cholesterol can therefore play an important role in long-term liver health.
What About Contaminated Water?
There is one important distinction between ordinary bottled water and contaminated drinking water.
Certain environmental contaminants are associated with increased cancer risk.
One particularly important example is aflatoxin, a toxin produced by certain molds that can contaminate foods such as improperly stored grains, corn, peanuts, and other agricultural products.
Long-term exposure to aflatoxin is a recognized liver cancer risk, particularly in combination with chronic hepatitis B infection.
This is very different from saying that ordinary bottled water causes liver cancer.
The specific contaminant, dose, duration of exposure, and route of exposure all matter.
Does Reusing a Plastic Bottle Cause Liver Cancer?
Another common internet claim is that repeatedly reusing a disposable plastic bottle causes cancer.
There is not sufficient evidence to say that ordinary reuse of a plastic water bottle directly causes liver cancer.
However, disposable bottles are generally designed for limited use. Repeated use can create another concern: hygiene.
If a bottle is repeatedly refilled without being properly cleaned, microorganisms can multiply inside it, particularly when the bottle contains moisture and is kept at warm temperatures.
For reusable bottles, regular washing and thorough drying are important.
Signs of Possible Liver Problems
Liver disease can sometimes develop silently, especially during its early stages.
When symptoms do occur, they may include:
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