Well, what is the RDA for sodium? 2000mg ? (I forget).
So, I guess it depends on how many you drink.
(as a comparison I just looked at my skim milk--it has 130mg sodium per 8oz serving.)
My friend just told me the other day that her husband drinks 12 cans of Mtn. Dew per day, so I'd say in his case, that's alot of sodium!!