The short answer
Long-term liver damage is the main driver of liver cancer risk. Hepatitis B or C infection, cirrhosis, heavy alcohol use, and fatty liver disease raise risk. Vaccination against hepatitis B and treating hepatitis C lower risk.
Long-term liver damage is the main driver of liver cancer risk.
Chronic hepatitis B or C infection raises risk.
Cirrhosis from any cause raises risk.
Heavy alcohol use and fatty liver disease raise risk.
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The whole article, with every detail and caution.
This page explains what raises the risk of liver cancer and which factors can be changed.
Liver damage is the common thread
Most liver cancer risk factors share a mechanism. They injure the liver over years. The liver's repeated attempts to heal that injury raise the odds of cancerous change. This is why cirrhosis sits at the center of the picture. Cirrhosis is scarring from long-term liver damage. Cirrhosis raises the risk of liver cancer.
Viral hepatitis: the leading cause worldwide
Chronic infection with hepatitis B or hepatitis C virus is a major risk factor for liver cancer. Both viruses cause ongoing inflammation in the liver over years or decades. That can lead to cirrhosis, and eventually, cancer. This is part of why hepatitis B vaccination and hepatitis C treatment count as liver cancer prevention, not just infection treatment. If you have never been tested for hepatitis B or C, ask your doctor whether you should be.
Alcohol and fatty liver disease
Heavy alcohol use can cause cirrhosis. Cirrhosis from any cause raises liver cancer risk. Nonalcoholic steatohepatitis (NASH), a form of fatty liver disease, can cause cirrhosis that may lead to liver cancer.
Smoking
Cigarette smoking has been linked to a higher risk of liver cancer. Ask your care team how weight and diabetes may affect your liver health.
Aflatoxin
Aflatoxin B1 is a toxin made by mold. Eating foods that contain it may raise the risk of liver cancer.
Who is affected most
Men are more likely to develop liver cancer than women. In the United States, rates are highest in American Indian and Alaska Native people (NCI).
What you can act on
Several of the biggest risk factors here can be changed. Steps to talk over with your care team include:
- Hepatitis B vaccination, if you have not had it
- Testing and treatment for hepatitis C
- Limiting alcohol
- Not smoking, or getting help to quit
None of these guarantee you will avoid liver cancer. Still, for a cancer this closely tied to preventable liver damage, they can shift the odds. If you have cirrhosis from any cause, ask your doctor about regular monitoring. Finding liver cancer early can give more treatment options.
What to ask your team
- Have I been tested for hepatitis B and C, and should I be vaccinated against hepatitis B?
- Do I have cirrhosis or fatty liver disease, and if so, should I be monitored regularly for liver cancer?
- How does my weight, alcohol use, or other health conditions affect my personal risk?
- What symptoms should prompt me to call you sooner rather than wait?
Sources
Common questions
What raises liver cancer risk?
The main risk factors involve long-term liver damage: chronic hepatitis B or C infection, cirrhosis (liver scarring), heavy alcohol use, and fatty liver disease. Men are more likely to develop liver cancer than women.
How does hepatitis affect risk?
Long-term hepatitis B or C infection causes ongoing liver damage that can lead to cancer over years. It is a major risk factor.
Can risk be lowered?
Yes. Getting vaccinated against hepatitis B, getting tested and treated for hepatitis C, limiting alcohol, and keeping a healthy weight can all lower risk.
Should higher-risk people be screened?
People with cirrhosis or chronic hepatitis may be offered regular screening to find liver cancer early. Ask your doctor if screening is right for you.
Questions to ask your doctor
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Sources last checked: 2026-07-21 what this meansLast updated: 2026-10-16Next planned review: 2027-07-21
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Cancer Explained does not originate medical claims. Every page restates guidance already published by the National Cancer Institute, the CDC, the USPSTF and the FDA, in plain language, with the source cited so you can check the original yourself. AI does the translating and organizing; automated checks test claims, citations, clarity and safety before anything publishes, and this is translation and navigation, not clinical judgment. Nothing here is personal medical advice, and no page can account for your particular situation.
Editorial status: Source checked — This page was written with AI assistance and then compared with the sources listed on it, looking for statements those sources do not back up. That check is not a sentence-by-sentence record and can miss errors. It is not a medical review, and it does not confirm the page is complete or right for your situation.
Human medical review: not completed. Pages here are not signed off by a clinician before they publish. That is not an oversight we are quietly working around: we restate published guidance and cite it, so the authority belongs to the source rather than to us, and every page names where its claims come from — you can verify us instead of trusting us. Where a volunteer clinician has reviewed a page, their name and credentials appear on it; where no name appears, no clinician has checked it. We are glad to have reviewers and are recruiting them, and we do not hold pages back waiting for one. Use this site to understand your situation and to ask better questions of the people treating you.
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