Re: Study Challenges Link Between Salt and Heart Disease: MedlinePlus

[Guest guest]

That study has some methodological flaws. You can read the review here:

http://www.hsph.harvard.edu/nutritionsource/salt/jama-sodium-study-flawed/index.\

html

Catia Borges

>

> http://www.nlm.nih.gov/medlineplus/news/fullstory_111659.html

>

>

> Sent from my iPhone

>

[Guest guest]

I would like to know why it assumes that the individuals with less salt

excretion in their urine were also consuming less salt in their diet. It would

be a methodological flaw to claim urinary salt levels directly relate to dietary

salt levels.

I would assume based on my understanding of physiology that the ones at greatest

risk for heart disease, who coincidentally also had the least sodium excretion

in their urine, were actually consuming similar amounts of salt but were

retaining more and that is what put them at greater cardiovascular risk over the

long run- they would be the ones that would benefit from a low salt diet

probably - the ones with kidneys that don't process it properly. How can we

identify that salt sensitive portion of the population instead of recommending a

highly restrictive diet for everyone?

I would suggest a repeat study that first assesses renal control of sodium

excretion- lab measured diet intakes and urine outputs for exact " pre "

measurement estimates of the person's kidney control over sodium excretion and

then further tracks over the long run with food frequency forms and other tools

the average sodium preferences of the participants as well as their CVD

outcomes.

The black population tends to excrete more magnesium and retain more calcium -

so yes - they may very well retain more sodium also and would benefit from a

moderate to low sodium and calcium diet and increased magnesium foods - ie -

lower dairy intake and higher vegetable and vegetable protein sources more like

the native diet. (only people with Paleo ancestors in their closest genetic past

need a Paleo diet)

R Vajda, R.D.

www.GingerJens.com

________________________________

To: rd-usa

Sent: Thu, May 5, 2011 8:35:53 AM

Subject: Re: Study Challenges Link Between Salt and Heart Disease:

MedlinePlus

That study has some methodological flaws. You can read the review here:

http://www.hsph.harvard.edu/nutritionsource/salt/jama-sodium-study-flawed/index.\

html

Catia Borges

>

> http://www.nlm.nih.gov/medlineplus/news/fullstory_111659.html

>

>

> Sent from my iPhone

>

[Guest guest]

I would like to know why it assumes that the individuals with less salt

excretion in their urine were also consuming less salt in their diet. It would

be a methodological flaw to claim urinary salt levels directly relate to dietary

salt levels.

I would assume based on my understanding of physiology that the ones at greatest

risk for heart disease, who coincidentally also had the least sodium excretion

in their urine, were actually consuming similar amounts of salt but were

retaining more and that is what put them at greater cardiovascular risk over the

long run- they would be the ones that would benefit from a low salt diet

probably - the ones with kidneys that don't process it properly. How can we

identify that salt sensitive portion of the population instead of recommending a

highly restrictive diet for everyone?

I would suggest a repeat study that first assesses renal control of sodium

excretion- lab measured diet intakes and urine outputs for exact " pre "

measurement estimates of the person's kidney control over sodium excretion and

then further tracks over the long run with food frequency forms and other tools

the average sodium preferences of the participants as well as their CVD

outcomes.

The black population tends to excrete more magnesium and retain more calcium -

so yes - they may very well retain more sodium also and would benefit from a

moderate to low sodium and calcium diet and increased magnesium foods - ie -

lower dairy intake and higher vegetable and vegetable protein sources more like

the native diet. (only people with Paleo ancestors in their closest genetic past

need a Paleo diet)

R Vajda, R.D.

www.GingerJens.com

________________________________

To: rd-usa

Sent: Thu, May 5, 2011 8:35:53 AM

Subject: Re: Study Challenges Link Between Salt and Heart Disease:

MedlinePlus

That study has some methodological flaws. You can read the review here:

http://www.hsph.harvard.edu/nutritionsource/salt/jama-sodium-study-flawed/index.\

html

Catia Borges

>

> http://www.nlm.nih.gov/medlineplus/news/fullstory_111659.html

>

>

> Sent from my iPhone

>