True Blood - The Medical Advancement With No Medical Applications
Don't get me wrong, I enjoyed True Blood, but I was always annoyed about one thing in particular: The whole setup is that scientists came up with a way to make artificial blood, but the only time we see this miracle advancement is in a bottle marketed to vampires. This is incredibly myopic, as this would be one of the most significant medical advances in history.
First of all, the Red Cross spends $2 billion a year collecting blood-- a majority of its operating budget. That money would no longer be needed, and would be spent on other causes. The Red Cross itself would become a considerably less influential power, which would probably be good for everyone (including the Red Cross).
In a world where blood is available by the keg, the average human lifespan would probably spike by 20 years. There are plenty of ailments, illnesses, and conditions that can be treated quite effectively with blood transfusion, but aren't, because blood isn't really available on that type of scale.
Every ambulance would be carrying a couple of gallons of O positive. In large hospitals they'd be working out of 50 gallon barrels. (This sounds like an exaggeration, but you'd be amazed how many different fluids are used in medicine because you just can't have that kind of blood on hand-- and because they're NOT blood, they have limits that unlimited transfusions would not.)
You would literally have a new class of licensed medical professional-- a transfusionist, falling somewhere between a phlebotomist, a paramedic, and a nurse. And they would be in incredibly high demand, because oh, buddy, we now have a world with elective blood transfusions.
Getting an "oil change" would be part of the spa experience. There would be teams doing housecalls out of a van ambulance, and blood boutiques in every shopping mall. Wealthy people would get transfusions the morning after a night of extreme partying.
And, I know, that's not the story they wanted to tell, but there would have been impact on the vampires as well, because the availability of True Blood would make real blood more readily obtainable, because humans could donate large quantities with no ill effects. (Hell, get a license as a transfusionist, go around in a van, and trade housewives a couple pints of True Blood for their natural blood... they'll PAY YOU to do it, and you can sell the blood or (if you're a vampire) drink it yourself.)
