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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
2007

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June 2008

Vitamin D health significance growing

It's been known for quite a while that we need vitamin D to maintain optimum health. What hasn't been known is exactly how much of a difference your vitamin D levels can make. And the more it is researched, the more evidence emerges that it is more important than previously thought. It is all but certain now that vitamin D health benefits extend to safeguarding against some of the major degenerative diseases plaguing most industrialized countries.

The most recent news comes from a long-term study on over 18,000 physicians (Giovannucci and Hollis, Archives of Internal Medicine, June 2008). According to the data, after weighing in other relevant factors, those physicians with no more than half the minimum acceptable blood level of vitamin D had twice the rate of heart attacks - and even higher rate of the fatal outcome - than those that had vitamin D level above the minimum.

Study results are in line with another recent study from January this year, researching the role of vitamin D in prevention of heart attack, heart failure and stroke. Some other recent studies suggest, although not quite conclusively, that it could also have significant anti-cancer properties.

While the exact mechanisms through which vitamin D plays important role in protecting from cardiovascular disease are still fairly obscured - in part due to dependence on complex interactions with a number of other relevant factors - what is already known gives us pretty good hints as to how it does it.

Since the body makes vitamin D from cholesterol, its low level may stimulate body's cholesterol production, in an attempt to increase production of vitamin D. Elevated levels of this "bad" (LDL) cholesterol can, under unfavorable circumstances (high free radical exposure, low level of antioxidants) can contribute to the narrowing of blood vessels, resulting in cardiovascular disease. This is only a possibility, but cannot be ruled out.

Along this line, low vitamin D level will make depositing calcium into the bones and teeth inefficient, with the loose calcium not excreted through the kidneys more likely to end up calcifying blood vessel walls, joints and other soft tissues.

Also, with vitamin D having balancing role in body's inflammatory response, by suppressing pro-inflammatory cytokines (proteins regulating inflammatory reaction) like TNF (tumor necrosis factor), while stimulating production of anti-inflammatory cytokines, like interlukin 10 (Schleithoff et al., American Journal of Clinical Nutrition, April 2006), lack of it is likely to result in more of inflammatory damage. With inflammatory damage to the inner lining of blood vessel walls being major factor leading into formation of wall deposits narrowing the arteries, it is easy to see why are adequate levels of vitamin D beneficial in protecting from cardiovascular disease.

In addition, it also significantly improves insulin sensitivity. Depending of how low are its initial blood levels, supplemental vitamin D improves insulin sensitivity between 20% (low initial level) and 60%. In comparison, the most commonly prescribed drug for diabetes, metamorfin, improves insulin sensitivity by only 13%12.

Knowing how much developing diabetes increases the chances of cardiovascular complications, this alone would make vitamin D a significant factor in reducing the incidence of cardiovascular disease.  þ

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