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GSE GSE Vitamin D - Sunshine Vitamin / Antioxidant against health problems

Vitamin D - "The Sunshine Vitamin"

You are My Sunshine, My Only Sunshine

 

Why “The Sunshine Vitamin”?

Vitamin D is referred to as the "Sunshine"vitamin because this important vitamin is created from exposure to sun:

–   Humans and other vertebrates create Vitamin D3 (cholecalciferol, a precursor to the active form CALCITRIOL) in their skin after exposure to ultraviolet B (UV-B) light (from the sun or artificial sources).

We can obtain vitamin D3 by consuming vertebrate animal or fish flesh -; but of the fish, only oily fish has any significant quantity

Due to various limiting factors (e.g. fear of melanoma, amount of available UV-B radiation, exposure times, use of sunscreens),most people today fall short of their vitamin D needs without a dietary/supplementary source.

Vitamin D Deficiency – A Silent Epidemic

–    Invertebrates, plants and fungi create when exposed to UV-B radiation - we can obtain D2 by consuming these foods

Those who do not receive enough vitamin D from the above sun-derived sources, can take vitamin D supplements - since supplemental D2 and D3 can be synthesized in a lab setting.

How to Obtain Vitamin D

For most people, the major source of vitamin D is the D3 form obtained from exposure to sunlight

Vitamin D does much more than aid calcium absorption for bone strength

Vitamin D is important because of the many functions it performs in virtually ALL the body's cells

Upregulates almost 3000 genes

Aids absorption of several minerals – not just calcium

Regulates immune system / inflammation

Increases blood's oxygen-carrying capacity

Enhances INSULIN production

Promotes optimal cholesterol levels –supporting cardiovascular health

And the list goes on . . .

Vitamin D Functions

Vitamin D Health Benefits

–   Nearly every cell in the body contains vitamin D receptors meaning the cells utilize vitamin D

Vitamin D receptors

Body's Vitamin D Journey

Vitamins D2 and D3 from dietary sources are packaged in chylomicrons and transported via the lymphatic system into venous circulation;

Enzymes in the body convert both D2 and D3 vitamins into CALCIDIOL 25(OH)D (its circulating D form), and then the kidneys (and also the cells to some degree) convert this to CALCITRIOL 1,25(OH)2D (its active form)

Forms of Vitamin D made in the Body

 

–   Availability and conversion of vitamin D to its active form depends on several factors - including skin color and having a sufficiency of dietary fats

Factors Affecting D3 Availablility and Conversion in the Body

D2 only stays in the blood stream a few days (compared to weeks for D3) - so one would need to supplement D2 regularly

Some Good Internet References

http://lpi.oregonstate.edu/infocenter/vitamins/vitaminD/

http://www.westonaprice.org/basicnutrition/vitamindmiracle.html

http://sunlightandvitamind.com/samples.htm Naked at Noon Krispin Sullivan

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