this is an old thread so i'm not sure if you'll see this? i myself have had high blood pressure for 2-3 years. usually around 140/90, but sometimes it crept much higher. i was on meds for 1 1/2 years, losing some weight, exercising a lot more, and it was still high. they tried to switch meds, but those made me extremely ill, out of desperation i cut out all of my salt, switching to nu-salt (a sodium free alternative) within a week my blood pressure began to hover around 110/70! it's stayed around there for almost 6months now, no meds.
so yeah, salt can sometimes be the problem, just thought i'd share that.