The incidence of liver disease has been high in recent years, and this has drawn attention to chronic liver injury. The following will follow A liver to understand it. 1, drinking too much alcohol Long-term or intermittent heavy drinking can cause liver injury. The more alcohol is consumed and the longer it continues to be consumed, the more serious the consequences. Alcohol can directly poison the liver cells, affecting their structure and function. In reality, there are indeed many people who suffer from alcoholic hepatitis and fatty liver due to excessive alcohol consumption, resulting in liver damage. 2, environmental pollution living environment deterioration is serious, the air is full of industrial exhaust, car exhaust, work environment air pollution, germs breeding. Long time in such an environment, a variety of chemical toxins into the body, inevitably will damage the liver. 3, virus invasion Whether it is hepatitis A (viral hepatitis A) virus, hepatitis B (viral hepatitis B) virus or hepatitis C (viral hepatitis C) virus as long as the invasion of the body, the liver will cause more or less impact, resulting in liver damage, liver cells or necrosis, liver function decline. 4, stay up too late work, often stay up late, sleep deprivation, excessive fatigue, will cause relative lack of blood flow to the liver, affecting the nutrient nourishment of liver cells, resistance to decline, resulting in damaged liver cells difficult to repair and aggravate the deterioration. 5, diet Often do not eat or excess nutrition can cause liver damage, the most common liver damage is fatty liver.