D3 is a vitamin.
An organic substance that is essential in very small amounts in the body, necessary for normal growth and activity. It is also a pro-hormone: A precursor to hormones. Once D3 is in the body, it goes through two conversions -- one in the liver and one in the kidneys. From these conversions, we get the pro-hormone calcidiol and the steroid hormone called calcitriol. Together, these two make a very powerful impact on our health.
The body cannot manufacture or synthesize vitamin D on its own. Although some foods contain vitamin D, the majority of our vitamin D was meant to be derived from drinking up the sun! Unfortunately, many of us are confined to an office all day, working indoors. And even if we do get some time outside, a variety of things affect our ability to get quality sun-saturation: Seasons, geographic latitude, cloud cover, smog, time of day and sunscreen. (Sunscreen? Yes, sunscreen!) In these situations, supplementing with vitamin D3 can make all the difference.
How Much Vitamin D is "Natural"?
Research has found that exposing plenty of skin (wearing a swimsuit, for example) to midday sun for about 20 minutes -- or until the skin just turns lightly pink , not burned -- results in the body receiving levels of D3 ranging from 10,000 IU's to 50,000 IU's.In these natural circumstances, the skin makes far more D3 than the current RDA suggests is necessary for good health. We would suggest that, while the RDA of vitamin D will keep you alive, a *lot* more might keep you vitally healthy, particularly if you rarely see the sun!
Why so important?
Vitamin D does wonders in the body. Most know that it plays a key role in regulating calcium in the body, promoting absorption which helps bone mineralization to occur. This is key in caring for osteoporosis, rickets, osteomalacia, and osteopenia.
Vitamin D doesn't stop there, however. When the body is getting enough D to go around, it is used liberally by many cells that are able to make calcitriol and use its cancer-fighting properties! Some of the most exciting research today is finding that D3 deficiency is common in cancer patients, and that D3 may help work against cancer.
Interestingly, cancer is not the only thing that has turned up the common link of a vitamin D deficiency. Blood sugar problems, low back pain, high blood pressure, type I and type II diabetes, Alzheimer's disease, kidney stones, psoriasis, depression, seasonal affective disorder, fibromyalgia and chronic fatigue syndrome and auto-immune diseases have all been linked with low levels of vitamin D, suggesting that this pro-hormone is a quiet, unsung worker of vast-reaching good in the body!
Last, but certainly not least, vitamin D3 is an immense contributor to controlling the immune system and helping to stave off "bugs" of all sorts. Flus, colds, other viral and bacterial upsets -- these seemingly little attacks on your health can be some of the most draining, often going through the entire family and leaving everyone worn out. Help minimize the down-time with a "bottle of sunshine"
For more information, D3 is referenced in this article: A Hill (not) To Die On
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FDA Disclaimer:* This statement has not been evaluated by the FDA. This product is not intended to diagnose, treat, cure or prevent any disease.