Question Author
Thanks for all the replies, it's more an actual craving for salt itself that just putting more in food for it to taste better, very unlike me cos i'm meant to be on a low sodium diet due to menieres and hardly use salt before this.
Not a good thing to be craving lol!
My blood tests seem to show I'm low in things rather than high, not dangerously low but low blood pressure, blood sugar and iron count and raised white blood cell count I think they said so maybe they could have something to do with it :)
Thanks for all your advice. Had thought it might be a mineral deficiency or something but will now mention it to my dr next time I see him as has been going on since well before christmas.