A: Cancer is not contagious – you cannot get cancer from someone who has it. There is a mutation in the DNA of the person which could be triggered by any of numerous factors, but it is definitely not contagious. A healthy person cannot “catch” cancer from someone who has it. There is no evidence that close contact or things like sex, kissing, touching, sharing meals, or breathing the same air can spread cancer from one person to another.
Cancer cells from one person are generally unable to live in the body of another healthy person. A healthy person’s immune system recognizes foreign cells and destroys them, including cancer cells from another person.
People with cancer need to be around other people.
Even today, families, friends, and co-workers of people with cancer sometimes stay away when they learn about the disease. As a result, people with cancer often say they feel isolated and alone.
You don’t have to stay away from someone with cancer – you cannot “catch” it from them. Don’t be afraid to visit a person with cancer. They need your visits and support.