Vitamin D sufficiency, along with diet and exercise, has emerged as one of the most important preventive factors in human health. Hundreds of studies now link vitamin D deficiency with significantly higher rates of many forms of cancer‚ as well as heart disease‚ osteoporosis‚ multiple sclerosis and many other conditions and diseases.
Because sunshine is a free commodity with no publicist or lobbyist, the Sunshine Vitamin Alliance is established as a coalition of right-minded physicians, individuals and organizations who advocate natural vitamin D production through regular, non-burning sun exposure.
Sunlight is the best and only natural source of vitamin D. Unlike dietary or supplementary vitamin D, when you get your ‘D’ from sunshine your body takes what it needs, and de-metabolizes any extra. That’s critical – as vitamin D experts and many health groups now advocate 1,000 to 2,000 IU of vitamin D daily – five to ten times the old recommendations. Because too much ‘D’ from dietary supplements may cause the body to over-process calcium, nobody really knows for sure how much supplementary vitamin D is safe. On the other hand, sunlight-induced vitamin D doesn’t have that problem – it’s the way your body is intended to make it!
Sunlight Exposure (full body exposure) *3,000 – 20,000 IU
Salmon (3.5 oz. of fresh, wild salmon) 600 – 1,000 IU
Salmon (3.5 oz. of fresh, farmed salmon) 100 – 250 IU
Fortified Whole Milk, 8-oz. glass** 100 IU
Fortified Multi-vitamin 400 IUSource: Holick, MF. Vitamin D Deficiency. New England Journal of Medicine, July 2007
* Sun exposure to the arms and legs for 10-15 minutes. The amount of vitamin D produced depends on the intensity of the UVB in the sun and many other factors. Darker-skinned individuals may need 5-10 times more exposure than a fair-skinned person to make the same amount of vitamin D. In northern climates sunlight is too weak in parts of the year to make any vitamin D – a period referred to as ‘Vitamin D Winter’.
** Vitamin D is supplemented into milk. It doesn’t occur naturally in milk.