"If he ate a diet of only meat, how did he not get scurvy?"
The diet of the aboriginal Ihalmuit of the Barren Lands of Canada has been studied, although I'm referring to memory of study many years ago - it was almost entirely caribou meat. They required one handful of fat for each three of meat to avoid protein toxicity, they lived in a very cold climate so burned off all that fat to maintain body heat, and they drank copious amounts of tea to deal with the protein digestion byproducts. The common name of the widespread northern plant Ledum groenlandicum is Labrador Tea, and it's leaves contain a lot of Vitamin C. So do pine needles and the leaves of many other northern plants that can be used as teas.
