If cancer can spread so easily throughout your body, why can’t it spread from person to person? Aka why isn’t it contagious?

Question

If cancer can spread so easily throughout your body, why can’t it spread from person to person? Aka why isn’t it contagious?

In: 9

Answer 1

Cancer is not an invasive disease. Cancer is your own body acting normal.

Your body has methods of preventing cancer but your body is made up of loads of cells and the wrong mutation in any of the cells can lead to malignant cancer. So if you could live forever, cancer would be inevitable because it is normal.

Here’s a good video to actually explain it like you’re five.