The logic behind the mechanism as to how salt can raise your blood pressure seems
reasonable, that of the more salt in your circulation, the more water kept in there with it due to osmotic pressure, meaning over time your blood pressure goes up as your heart is forced to pump harder and this leads to permanent changes in the blood vessels and hence a permanent rise in your baseline over time. The higher the blood pressure, the greater the risk of heart attacks and strokes and kidney damage and so on.
Now that seems reasonable but what I like about this place is how it makes me think and really try to make as sure as I can about my base assumptions, as I did in that imaginary conversation we had about global warming. I also know both the risks of looking at biological systems in isolation as well as how complicated and conflicting health information can be even to me and the people I work with and we work with this stuff all the time. I don't envy people outside the medical profession trying to make sense of this.
Turns out the science may be even less settled than I thought but I have to read more on the topic. I agree, though there's just about never a quick isolated factor solution.http://www.todayifoundout.com/index.php/2013/02/why-does-salt-raise-blood-pressure/
Always, always, always read more than one source, though but also be wary of absolutes in anything regardless of the direction.
Things I've said which are safe to do:
1) No harm in just getting your blood pressure checked and getting a number. Over time, regular checks can show a trend. At least knowing what it is and what direction it's heading over time if it is going anywhere can't hurt in and of itself.
2) Even if you don't add any salt to anything, you won't be eating insufficient amounts. Processed food will have it added and even if you just eat purely unprocessed food, there's still sodium in that (but that's few to very few of us in general in modern technological areas.)
Anyway, to kick this off, I'm going to the doctor's on Monday (my GP/primary care physician) to get my blood pressure measured among other things and it used to be very low (but symptom free - no black outs) but last year, it was just low. Firstly want to make sure it's not creeping any further up and also see if what I do over the next year in the areas of diet (which is more than just salt) and exercise have any effect on it over the next twelve months.
So that's all going to be part of the blood pressure part of this thread.
I think the key thing with salt is moderation. Now I just have to work out how much 'moderate' is.