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Health news:
 
June 2010 - Dec 2013

Minimizing breast cancer risk

May 2010

Time to move beyond salt ?

Salt hypothesis vs. reality

Is sodium bad?

April 2010

Salt studies: the latest score

From Dahl to INTERSALT

Salt hypothesis' story

March 2010

Salt war

Do bone drugs work?

Diabetes vs. drugs, 3:0?

February 2010

The MMR vaccine war: Wakefield vs. ?

Wakefield proceedings: an exception?

Who's afraid of a littl' 1998 study?
 

January 2010

Antibiotic children

Physical activity benefits late-life health

Healthier life for New Year's resolution

 

December 2009

Autism epidemic worsening: CDC report

Rosuvastatin indication broadened

High-protein diet effects

 

November 2009

Folic acid cancer risk

Folic acid studies: message in a bottle?

Sweet, short life on a sugary diet

 

October 2009

Smoking health hazards: no dose-response

C. difficile warning

Asthma risk and waist size in women

 

September 2009

Antioxidants' melanoma risk: 4-fold or none?

Murky waters of vitamin D status

Is vitamin D deficiency hurting you?

 

August 2009

Pill-crushing children

New gut test for children and adults

Unhealthy habits - whistling past the graveyard?

 

July 2009

Asthma solution - between two opposites that don't attract

Light wave therapy - how does it actually work?

Hodgkin's lymphoma in children: better alternatives

 

June 2009

Hodgkin's, kids, and the abuse of power

Efficacy and safety of the conventional treatment for Hodgkin's:
behind the hype

Long-term mortality and morbidity after conventional treatments for pediatric Hodgkin's

 

May 2009

Late health effects of the toxicity of the conventional treatment for Hodgkin's

Daniel's true 5-year chances with the conventional treatment for Hodgkin's

Daniel Hauser Hodgkin's case: child protection or medical oppression?

April 2009

Protection from EMF: you're on your own

EMF pollution battle: same old...

EMF health threat and the politics of status quo
 

March 2009

Electromagnetic danger? No such thing, in our view...

EMF safety standards: are they safe?

Power-frequency field exposure
 

February 2009

Electricity and health

Electromagnetic spectrum: health connection

Is power pollution making you sick?

January 2009

Pneumococcal vaccine for adults useless?

DHA in brain development study - why not boys?

HRT shrinks brains

NEWS ARCHIVE
2009
2008
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Sodium and your health

The good old friend of ours, sodium (Na), is macro-mineral in everyday's use at most everyone's table. Its primary source is sodium chloride, a coarse whitish powder we all know as "salt".

What is it that we need sodium for? You may be surprised how important for your health is this soft metallic element. As a major body electrolite, it is essential for creating and maintaining the spark that keeps us alive: bioelectricity.

Being crucial for the cellular function and survival, sodium is directly related to the organ function as well. For instance, with its cellular buddy phosphorus, is directly related to the function of your kidneys.

More specifically, high sodium levels (that is, high sodium to phosphorus - and other nutrients - ratio), can be pro-inflammatory and result in infection of the right kidney. If it is high phosphorus, it is the left kidney that is affected18. The cure is most often as simple as balancing sodium, or phosphorus, with the rest of minerals.

Also, since the ratio of "bad" to "good" cholesterol depends primarily on kidney function, low sodium levels stimulate production of "bad" LDL cholesterol and triglycerides.

And of course, there is that dreaded sodium link to high blood pressure. Statistically, your chances to be affected are 1 in 3. Not too bad, and even if you are "salt sensitive", that does not necessarily mean it will make you hypertensive. You still need salt to stay alive and well: too little can be just as bad as too much, and everyone has to find near-optimum individual level.

However, there are other metabolic pathways where sodium can affect your health. In some people, low sodium level can result in low blood pressure, dehydration and, longer-term, kidney stones, arthritis, and fatigue.

Elevating sodium intake resolves these problems, unless the aldosterone (steroid hormone) levels are also low. This hormone is needed for sodium retention, and when it is low, higher sodium intake results in the opposite effect: it is readily excreted together with lots of fluid, which worsens the above low-sodium symptoms. In such case, low aldosterone levels need to be corrected (by supplementing vitamin B1, choline or iron), which would likely also resolve low-sodium status18.

Sodium is needed to control the body fluid level, as well as the osmotic pressure between the cells. Make sure you have enough of it, but not too much. Other than elevated blood pressure and water retention (edema), excessive sodium intake can cause nausea, gout, kidney damage and, in extreme cases, stroke and coma. Since the kidneys can't excrete sodium without calcium, excessive sodium intake has lowering effect on your calcium levels.

Sodium DRI (Dietary Reference Intakes, the most recent set of dietary recommendations set by the government) for an average healthy adult is set at 1.5g (slightly lower after 50 years of age), with the safe limit set at 2.3g a day. Since the table salt sodium content is around 40% by weight, this translates into the safe limit of 6g of salt a day.

Most world populations have higher, or significantly higher sodium intake. In the U.S. it averages about 3.5g a day (nearly 9g of salt), and in some East Asia regions it can be more than twice as much. Average worldwide range of daily consumption is between 100 and 200 mmol, which translates to 2.3-4.6g of sodium (5.75-11.5g of salt).

This suggests that the safe limit may be somewhat higher than the officially recommended. Since the average body sodium content is nearly 0.14% by weight, or 1.4 g per kg of body weight, it is unlikely that variations in intake of few grams of salt (i.e. 1-2g of sodium) would pose significant problem for body's very capable regulatory mechanism. As always, this general assessment is subject to possibly wide variations in individual sensitivities.

Natural sodium food sources are invariably low in their salt content, with the exception of some sea algae. Thus most of your sodium intake comes from salt. R

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