I'm a bit late to the discussion, as I've just made it back from the woods. I fasted from wednesday morning until friday night, so around 60 hours. Broke the fast with some rabbit. I finished the rabbit saturday night. Surprisingly I didn't feel any hunger throughout the fast. This could be partially due to being in a "survival" situation and had other priorities.
As for the healing process.. I cut my finger Thursday night, and it didn't stop bleeding until late Friday. I'd say it was probably the cold that affected it, but I'd wager the fasting had an effect as well.