Hepatitis B is a virus that causes inflammation of the liver. It is transmitted by contact with infected blood or cum through activities like unprotected fucking, sharing injecting equipment, toothbrushes or razors, oral sex, tattooing or body piercing with un-sterile equipment. Symptoms may include loss of appetite, tiredness, nausea, jaundice and dark urine. A blood test will diagnose hep B. There is no cure for hep B although there are some treatments available. Prevention includes an effective hep B vaccination, a combination hep A and B vaccination is also available.