What are the causes of hepatitis B, why repeated attacks?

        The common causes of hepatitis b:

      (1) over exertion: This is the main cause of hepatitis B. Because of excessive fatigue, such as heavy manual labor and brain labor, will make the body long in the overload state, leading to the decline in the body's resistance to disease.

      (2): to make the body of various chemical reaction retardation, decreased resistance, invasive human hepatitis B virus received reproductive opportunities.

      (3) malnutrition: such as the partial eclipse, a large number of smoking and drinking, the body resistance weakened, especially the liver damage caused by alcohol.

In addition, the serious lack of sleep, diet, mental depression, sexual section, pregnancy, liver damage among drugs and so on, are also the predisposing factors of hepatitis B.

      Hepatitis B is recurrent, because the patient's hepatitis B virus (HBV) continued to exist and continue to replicate (reproduction) results. Clearance of HBV, inhibiting its replication in the liver cells, by the human body's cellular immune response and humoral immune response, especially the cell's immune response. And hepatitis B patients (mainly refers to chronic hepatitis B) usually have immune control system disorders, that is, cellular immune function is low, can not remove the HBV or inhibit its replication. Especially in the case of fatigue, trauma, mental stimulation and drug toxic effect, due to the reduction of the body resistance, the virus will re active reproduction and reproduction. When the virus is increased to a certain extent, it will arouse a strong immune response in vivo, the destruction of the infected liver cells, clinical symptoms, such as serum alanine aminotransferase (ALT) increased, jaundice and so on. There are some patients who have their own immune response, destruction of their liver cells, but also lead to the recurrence of hepatitis B.

      Therefore, all can lead to the patient's immune regulation and control system disorders, will cause the recurrence of hepatitis B.