What is this Career called?

Hi everyone,

I'm interested in a field called "Health Promotion." Here's a video to see what I'm talking about:

http://www.youtube.com/watch?v=y9THQTEqMaU

What would you called this type of work (I don't know the technical term)? Meaning, what degree would you need to practice this (What universities offer something like this)?

Thanks in advance.