Here’s something most people are never told: Your immune system is a major part of cancer prevention — especially when it comes to viruses that are linked to cancer. Viruses such as HPV, hepatitis B and C, Epstein–Barr virus, HHV-8, and others are often controlled or cleared by a healthy immune system. When the virus is cleared, the risk usually goes with it. The concern is persistent infection. When the immune system is weakened — from certain medications, illness, immune disorders, smoking, ch

Hepatitis B Virus