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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.   Ee 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 Naked at Noon Krispin Sullivan

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