You raw dawg in your single days? yes VD is harder to detect in wiminz, three kids, every test under the sun for obvious reasons, and the rates might be under reported...type o's are solid whores ouch based on what I've read but it doesn't give you a get out of jail free card...it's statistically signifigant but doesn't actually protect you in any way that has been defined.
yeah I wouldn't rely on a blood type to keep things that drip, itch, or kill at bay