Meat has vitamin B-12, for one. Not a good idea to cut out carbs all together, but cutting down and replacing, say, spaghetti noodle with spaghetti squash is a good idea....in theory. I'm going to try it this week.
It's debatable, but I imagine a diet that's considered as healthy for anyone is fine.
One supplement most people take is fish oil. I'm taking flax seed oil, myself.
Alpha Lipoic Acid + Acetyl L-Carnitine seems to help.
A D+Calcium+Magnesium is good, especially if you're a shut-in like me!
I'm going to get a curcumin supplement in the mail any day now.
I heard yesterday that rosehips help facilitate the electricity (nerve function...?) of our bodies to travel, or something. That one's on my list of things to invetigate still.