Eww, why would you eat 'em raw?? Why not just wait until they're ready?? :puke0000:
I don't know about the GI of sweet potatoes, but raw potatoes have pyrithryns which can mess up your stomach lining. Then again, frying and oven-baking them can create acrylamide. (Boiling is okay.) On the other hand, they have antioxidants, vitamins, etc.
"You play, you win. You play, you lose. You play." --Jeanette Winterson (yeah, that's out of context, she wasn't talkin' about potatoes.)