Fat in Guiness????

My roomate insists that there is fat in Guiness beer. I refuse to beleive it! Isnt it just made from hops and barly like any other beer? What do they do, add a little meat juice in at the end or something? Anyone know about this?

All grains contain some fat, though not very much; in wheat this is in the wheatgerm.

However, I’m not sure if this is retained in the brewing process.