Eating with a person who has hepatitis B has a lower chance of transmission, but it is still recommended to avoid eating together as much as possible. Hepatitis B virus is generally transmitted through blood, mother-to-child vertical transmission and sexual transmission. Therefore, contact between body fluids and blood is likely to result in the spread of the hepatitis B virus. However, eating together does not involve a large amount of exchange of body fluids and blood, and the amount of hepatitis B virus present in saliva is generally low, so eating with a person with hepatitis B generally does not cause transmission of the virus. However, when there is mucosal damage or bleeding in the oral and digestive systems of people who eat together, contact and ingestion of the hepatitis B virus may result in transmission of the hepatitis B virus. Although the chance of contracting the hepatitis B virus by this route is low, personal protection is still needed. Therefore, it is not recommended to eat with a person with Hepatitis B when you are at risk, such as when you have mouth ulcers or bleeding. When you are in close contact with a person with hepatitis B or when you have a high risk of infection, you should be screened regularly in a hospital and take personal precautions.