Doctors Reveal the One Blood Type Which Has the Lowest Risk of Cancer – story-veterans.com

Understanding the Four Main Blood Types
There are four primary blood groups — A, B, AB, and O — and each can be either positive or negative depending on the presence (or absence) of the Rh protein.

Most people only discover their blood type during blood donation, pregnancy, surgery, or other medical situations. Yet this simple biological marker may play a subtle role in disease susceptibility.