Lke with everything else, it isn't only a question of beer: yes or no. There are different quality beers out there. Beer can be made out of many things. Most beer is pasturiesd, but there is also unpasturised beer out there, which I guess would be probiotic. Would it?
I caught 5 minutes of a documentary yesterday that reported on the discovery of tetracycline in Egyptian mummies. After a long search, they found it came from the beer they used to drink. I wonder what they made beer out of.
So if one wanted to look for paleo beer, what would it be made out of?