I have to say I've been against this no/limited health regain from the start. It is a bad idea, and like others have said there are many (mostly unpleasant) ways to deal with it, but what does it really add to the experience? That's the real question that keeps popping up in my head. It adds an artificial difficulty spike perhaps, but if you are playing on easy why in the Maker's name would you want anything to make the game harder?
This mechanic should have only existed in the upper difficulties (the same way friendly fire usually is). Meh! Whatever though, it can't be helped. Hopefully on easy it will be at least 80% health that comes back, cause that I can work with easily enough.