Several factors can contribute to the development of liver cancer. Here are some common risk factors and causes of liver cancer:

1. Chronic viral hepatitis: Chronic infection with hepatitis B virus (HBV) or hepatitis C virus (HCV) is one of the leading causes of liver cancer. These viruses can cause long-term inflammation of the liver, leading to an increased risk of developing liver cancer.

2. Cirrhosis: Cirrhosis is a condition in which healthy liver tissue is replaced with scar tissue. It can be caused by chronic alcohol abuse, chronic viral hepatitis, non-alcoholic fatty liver disease (NAFLD), autoimmune diseases, or other conditions. Cirrhosis significantly increases the risk of liver cancer.

3. Alcohol abuse: Excessive and prolonged alcohol consumption can cause liver damage, including inflammation, fatty liver, and cirrhosis, which can eventually lead to liver cancer.

4. Non-alcoholic fatty liver disease (NAFLD): NAFLD is a condition characterized by the accumulation of fat in the liver. If left untreated, it can progress to more severe liver diseases, including liver cancer.

5. Obesity: Obesity is associated with an increased risk of developing liver cancer, mainly due to its association with non-alcoholic fatty liver disease (NAFLD).

6. Diabetes: People with diabetes are at a higher risk of developing liver cancer, possibly due to the link between diabetes and NAFLD.

7. Environmental factors: Exposure to certain environmental toxins and chemicals, such as aflatoxins (produced by certain molds that grow on improperly stored food) and certain industrial chemicals, may increase the risk of liver cancer.

It's important to note that having one or more risk factors does not necessarily mean a person will develop liver cancer.