Even a person has a fit body still there is a lot of possibility that she or he can get any kind of disease. Technology still growing and growing, but mans life become shorter and shorter. One kind of disease that is very dangerous and can kill human being is the Hepatitis B.Hepatitis B virus is a highly disease that has infected many people in the whole world. This disease can be attack to one person without showing any symptoms for many years. Those people who are unprotected sex with an infected person, sharing needles when injecting illegal drugs, blood transfusions, and during birth from an infected mother to a new born child is the one who can be infected and high risk with this kind of virus. Hepatitis B can be prevented one by getting vaccinated against HBV, Practice safety at work if you are working with blood always use gloves and dispose it properly. For those who are making love always practice with a safe sex like use condoms and other protection. Used your own personal things like toothbrush and other personal things. Watch your eating food especially that food that can buy in street that not sure if it is clean or not. And if someone needs to use a needle make sure that this needle is clean or not yet in use.