Vitamin D: Vital for Your Heart

[Guest guest]

The One Vitamin That is Vital for Your Heart

A lack of vitamin D, a nutrient that is generated primarily through

exposure to sunlight, helps boost the risk of heart attacks and strokes.

Experts estimate that up to half of adults and 30 percent of children

and teenagers in the United States are vitamin D-deficient. There is a wide

array of studies linking increased cardiovascular risk with vitamin D

deficiency. For example, recent data from the long-running Framingham Heart

Study indicated that someone with vitamin D levels below 15 nanograms per

milliliter of blood is twice as likely to suffer a heart attack, stroke or

other cardiovascular problem within two years compared to those with higher

levels.

Vitamin D is well known as the " sunshine vitamin " because human skin

makes the nutrient upon exposure to sunlight.

Sources:

a.. U.S. News & World Report December 1, 2008

a.. Journal of the American College of Cardiology December 9, 2008;

52:1949-1956

Dr. Mercola's Comments:

I've been writing a lot about vitamin D lately, and that's

because I want it to sink in with each and every one of you reading this

just how important it is for your health. I even recorded a one-hour vitamin

D lecture on the topic to help clear up any confusion.

At this time there are at least 36 organ tissues in your body

whose cells respond biologically to vitamin D, including bone marrow,

breast, colon, intestine, kidney, lung, prostate, retina, skin, stomach and

uterine tissues.

One of these organs is also your heart, for which vitamin D is

essential.

There are a number of physiological mechanisms triggered by

vitamin D production through sunlight exposure that act to fight heart

disease, such as:

. An increase in your body's natural anti-inflammatory cytokines

. The suppression of vascular calcification

. The inhibition of vascular smooth muscle growth

And according to Dr. H. O'Keefe, director of preventive

cardiology at the Mid America Heart Institute in Kansas City and the lead

author of the above study:

" There are a whole array of studies linking increased

cardiovascular risk with vitamin D deficiency. It is associated with major

risk factors such as high blood pressure, diabetes and stiffening of the

left ventricle of the heart and blood vessels. Inflammation is really

important for heart disease, and people with vitamin D deficiency have

increased inflammation. "

Aside from heart disease, vitamin D influences up to 3,000 of

the 30,000 genes in your body, helping to prevent diseases ranging from

cancer to the flu.

Unfortunately, it's thought that over 95 percent of U.S. senior

citizens and African Americans may be deficient, along with 85 percent of

the American public.

How Much Should You Get (Hint: Don't Listen to the RDA)?

I recently did an expert interview and interviewed one of the

top vitamin D experts in the world, Heaney, MD. He has been studying

vitamin D for over five decades and was one of the consultants that served

on the board in 1997 that actually made the recommendations for our current

vitamin D RDAs.

I won't be posting his interview till the spring but he told me

that over 98% of what is known about vitamin D was learned since 1997. This

was largely because prior to that time there was no simple blood measurement

to detect vitamin D levels.

Be that as it may, the current RDA for vitamin D developed by

the Food and Nutrition Board at the Institute of Medicine of The National

Academies is miserably insufficient as it is only:

. 200 IU for people aged 14-50

. 400 IU for people aged 51-70

. 600 IU for people over 71

The American Academy of Pediatrics has even recently doubled its

recommendation for vitamin D in children to 400 IU a day, and that is also

completely inadequate.

There's simply no way to reap any benefit whatsoever from these

abysmally low amounts.

Consider this -- in the summertime when you put on your bathing

suit and sunbathe, your body produces about 20,000 IUs of vitamin D!

You might wonder how long you need to sunbathe, well the answer

is that it depends and is highly variable. The time you need to generate

maximum vitamin D is how long it takes for your skin to turn the lightest

pink when you are outdoors. This is called the MED or minimal erythemal

dose. For some people it could be a few minutes while for others it may

actually be hours.

Once you have this exposure it makes absolutely NO SENSE to

continue to expose your skin to the sun as you will only increase your risk

of premature skin aging, wrinkling and skin cancer.

During the winter or times when you have no or very limited

exposure to sunshine, you can make up for the lack of sunlight by using a

safe tanning bed or taking a high-quality natural vitamin D3

(cholecalciferol) supplement.

How much should you take? 4,000-5,000 units per day is

appropriate for most adults. If you are very heavy you may need to double

that dose, and for children the dose can be half that.

Important Information About Vitamin D Testing

It's possible to overdose on vitamin D when you take it in

supplement form. Because of this it's very important that you monitor your

vitamin D levels by blood testing to make sure your levels are therapeutic

and not toxic.

I advocate getting your vitamin D levels tested regularly, but

as I reported recently, you now need to beware of where you're getting your

test done. For an in-depth explanation of what you MUST know before you get

tested, please read my updated article Test Values and Treatment for Vitamin

D Deficiency.

Again, I also strongly suggest that you set aside 60 minutes to

watch my recent vitamin D lecture. I honestly believe that this is one of

the MOST important videos I have ever created.

Related Articles:

How Vitamin D Protects Your Heart

Sunshine Works for Congestive Heart Failure

Vitamin D Lowers Inflammation