What is the main cause of liver disease? The answer depends on who you ask. For doctors, it is a matter of keeping the liver healthy and making sure that the patient gets enough nutrients, but it could also be as simple as not drinking enough alcohol or eating too much red meat. But when it comes to patients, many just don't know. Unfortunately, for those who don't have a very good understanding of this condition, it can be quite confusing. The problem is that there are several causes of liver disease, and each has different implications for the person suffering from it. And because it is such a complicated illness, people are often left in a state of confusion and do not understand the treatment options available to them. The main cause of liver disease is a fatty liver. When there is a fatty liver, there is build up of fat inside the liver. This is where cirrhosis can develop, because the liver is unable to flush away this excess fat. When there is a fatty liver, this can lead to other complications, such as heart disease. Another main cause of liver failure is bacterial hepatitis. Bacteria often get into the liver and start interfering with the function of the organ. As the liver is no longer working properly, other organs are at risk as well, including the brain and kidneys. One thing that all three main causes of liver disease have in common is that they are caused by external factors. These can include things like alcohol, pharmaceuticals, high blood pressure, and poor diet. In fact, one of the most common problems for people with livers is fatty liver. They are simply too fatty to be able to function properly. Some may not even know that they have this problem, until it is too late.