fad or legit?

I was watching Dr.Oz the other day & he had an interesting segment on "Paleo". I'd heard of it before and noticed a lot of my "friends" on pintrest were re-pinning "Paleo" recipes and info. I started looking into it. If it does what everyone is saying, my body will feel amazing and my kiddo will feel better. The great question is, "is it a fad or, is it legit?" I guess we're about to be the suckers that find out. I've heard it helps with arthritis, celiac, lupus and other auto-immune issues. I've been doing some more ADHD research, and have come across several professionals that thing ADHD is a link to auto-immune & gastro issues. If this is the case, and eating Paleo works, I'm ready! We shall see & keep you posted on our findings!