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Salt

Penn

Penn

Member
So a couple of years ago when I had high blood pressure (140/90) the doc told me to cut salt out of my diet. His reasoning was that increased salt in the blood causes the body to compensates for the extra salt by holding onto more water increasing blood volume and thus increasing blood pressure. It sounded like bushit to me at the time and as I already had a fairly low salt intake I didnt worry about it.
I was thinking about it the other day and was bored so I thought I'd try a bit of googlefoo on it and it seems my googlefoo aint as good as it use to be. It seems its not clear cut one way or the other, if you salt sensative it will raise bloodpressure. If your not it could raise it by 1mmHg (big deal). Apparenly if you lower your salt intake below a cerain level that will also raise blood pressure. What the fark?
So time to look at the salt cycle in the body and what is going on. Salt is filtered out in the kidneys and you piss it out. Which I pretty much said to the doc at the time "wouldnt you just piss out the excess salt?". And guess what the kidneys are very good at filtering salt out at around 25,000 mmoles/day of sodium is filtered (572.5 grams if my maths is right), and most of that is reabsorbed cos the body needs it. Reabsobtion being controlled by a bunch of hormones. Only about 100mmoles/day is excreted in urine (2.29g).
Wouldnt it make more sense that if you had blood pressure problems from this that it is more likely to be from the hormones controling reabsobrtion than from ingesting 5g extra salt?
If it was from 5g extra salt couldnt you test this by fasting or taking a dieuretic and reducing your blood volume to a normal level (time to get those leeches out even)?
Is this just Dogma that Docs spew out because thats what they were taught or am I way off?
What say you ausbb?
 
Penn said:
So a couple of years ago when I had high blood pressure (140/90) the doc told me to cut salt out of my diet. His reasoning was that increased salt in the blood causes the body to compensates for the extra salt by holding onto more water increasing blood volume and thus increasing blood pressure. It sounded like bushit to me at the time and as I already had a fairly low salt intake I didnt worry about it.
I was thinking about it the other day and was bored so I thought I'd try a bit of googlefoo on it and it seems my googlefoo aint as good as it use to be. It seems its not clear cut one way or the other, if you salt sensative it will raise bloodpressure. If your not it could raise it by 1mmHg (big deal). Apparenly if you lower your salt intake below a cerain level that will also raise blood pressure. What the fark?
So time to look at the salt cycle in the body and what is going on. Salt is filtered out in the kidneys and you piss it out. Which I pretty much said to the doc at the time "wouldnt you just piss out the excess salt?". And guess what the kidneys are very good at filtering salt out at around 25,000 mmoles/day of sodium is filtered (572.5 grams if my maths is right), and most of that is reabsorbed cos the body needs it. Reabsobtion being controlled by a bunch of hormones. Only about 100mmoles/day is excreted in urine (2.29g).
Wouldnt it make more sense that if you had blood pressure problems from this that it is more likely to be from the hormones controling reabsobrtion than from ingesting 5g extra salt?
If it was from 5g extra salt couldnt you test this by fasting or taking a dieuretic and reducing your blood volume to a normal level (time to get those leeches out even)?
Is this just Dogma that Docs spew out because thats what they were taught or am I way off?
What say you ausbb?
Click to expand...

I don't know the answer to the salt problem but I would assume genetics and or being overweight would be a bigger issue than salt.

Also the problem with google is that its not a peer reviewed resource. It gives as much weight to any old weirdos opinion as it does a well researched expert opinion.
 
Just stop adding salt to your food. If it makes a difference then continue doing it.
Ketogenic dieting has been shown to improve all the issues you've listed above- so that's certainly an option. I find I even have to add salt to my food to keep a normal sodium level
 
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