Sally, I have extremely low blood pressure and possibly something called POTS (Postural orthostatic tachycardia syndrome) so not everyone should be on a low salt diet.

I was told to eat lots of salt -- carry pretzels and Gatorade along with me! And I'm not much of a fan of either but I do love potato chips (too bad they're so fattening!)
I do agree with agate that the ankle swelling is an unpleasant side effect, though.