Just "D" Facts about Vitamin D

Benefits of Moderate UV Sunshine Exposure

Archive for December, 2010

What’s Your “D” Score?

Posted by D3forU on December 20, 2010

Indoor tanning clients have 90 percent higher vitamin D blood level scores as compared to non-tanners — levels that are close to what outdoor workers and non-human primates who live outdoors in the sun naturally have.

2010-12-16 Know D Score copy“Sunbeds that emit UVB — and more than 90 percent of them do — make vitamin D much the same way as natural sunshine triggers vitamin D production in your skin,” Smart Tan Vice President Joseph Levy says. “While the academic world fights the political game of figuring out how much vitamin D they think people need, no one can argue that indoor tanners have levels consistent with what people and primates make naturally when they live intended outdoor lives. Nature never intended for humans to live and work indoors in cubicles.”

Do you know your vitamin D blood level? It’s measured in what is called a “calcidiol test” (a 25-hyrdoxy vitamin D test). Results are delivered in nanograms per milliliter (ng/ml) or in nanomoles per liter (nmol/L) in Canada. (1 ng/ml = 2.5 mnol/L). Here are levels from recent studies:

Non-human primates(1): 50-80 ng/ml

Outdoor workers (1,2): 49-50 ng/ml

Indoor tanners(3): 43-49 ng/ml

Non-tanners(4): 23-25 ng/ml

Dermatologists(5): 13-14 ng/ml


1. Vieth R. Why the optimal requirement for Vitamin D3 is probably much higher than what is officially recommended for adults. J of Steroid Biochemistry & Molecular Biology 89–90 (2004) 575–579

2. Barger-Lux MJ, Haney R. Effects of Above Average Summer Sun Exposure on Serum 25-Hydroxyvitamin D and Calcium Absorption. J of Clinical Endocrinology & Metabolism 2002; 87(11):4952–4956

3. Tangpricha et al. Tanning is associated with optimal vitamin D status (serum 25-hydroxyvitamin D concentration) and higher bone mineral density. Am J Clin Nutr 2004;80:1645–9

4. Ginde A. Demographic Differences and Trends of Vitamin D Insufficiency in the US Population, 1988-2004. Arch Intern Med. 2009;169(6):626-632

5. Czarnecki D et al. The vitamin D status of Australian dermatologists. Clinical and Experimental Dermatology 34; 624-25.




Posted in UV News | 1 Comment »

Sunscreen Chemicals Absorbed into Body. Found in 85% of Human Breast Milk Samples.

Posted by D3forU on December 14, 2010

(NaturalNews) Before you apply creams, lotions, cosmetics and sunscreens to your skin, it might be a good idea to find out what’s really in them.
What’s more, you need to know those ingredients aren’t necessarily just coating the outside layers of your skin. For example, as NaturalNews previously reported, UCLA scientists have recently discovered nanoparticles in cosmetics and sunscreens can enter and wander throughout the body, potentially disrupting body functions on a sub-cellular level (http://www.naturalnews.com/027603_n…).
And now, for the first time, a study just published in the international science journal Chemospherehas shown that a group of chemicals known as UV (for ultraviolet radiation) filters are turning up in humans internally — and the phenomenon is widespread.

In fact, the investigation, conducted by a Swiss National Research Program called Endocrine Disrupters: Relevance to Humans, Animals and Ecosystems, found UV filters, which are common in cosmetics and sunscreens, were present in 85 percent of human milk samples tested. What does this mean for adults, much less babies taking in this contaminated milk? The alarming truth is, no one knows.

For the study, during the fall and summer of 2004, 2005 and 2006, human milk was sampled from mothers who had given birth at the University Women’s Hospital in Basel, Switzerland. The research participants also answered detailed questionnaires in order to document their use of different types of cosmetic products and sunscreens.

When the women’s breast milk was analyzed, tests revealed the milk samples contained a huge list of chemicals including persistent organic pollutants (POPs), synthetic musk fragrances, pesticides, phthalates, parabens, flame retardants (polybrominated diphenylethers), polychlorinated biphenyls (PCBs) — and cosmetic UV filters. What’s more, the UV filter chemicals were surprisingly widespread; they were comparable in concentrations to PCBs, which have long been known to contaminate the environment.

“Research on the effects of endocrine disrupters (chemicals interfering with hormone actions) has shown that it is of utmost importance to obtain information on simultaneous exposure of humans to different types of chemicals because endocrine active chemicals can act in concert. Information on exposure is particularly important for the developing organism at its most sensitive early life stages.

Human milk was chosen because it provides direct information on exposure of the suckling infant and indirect information on exposure of the mother during pregnancy,” research team leaders Margret Schlumpf and Walter Lichtensteiger said in a media statement.

The analyzed data of the milk samples obtained from individual mothers were then compared with the information collected through the questionnaire about cosmetic and sunscreen use. While exposure patterns differed between individuals, Dr. Schlumpf, who is a scientist at the University of Zurich, pointed out that the total reported use of products containing UV filters was significantly correlated with the presence of those chemicals in breast milk.

In all, a total daily intake of each individual chemical found in the breast milk tests was calculated for each baby who was fed with breast milk. The results showed some infants were taking in daily amounts of PCBs and several pesticides that were far above the U.S. Environmental Protection Agency (EPA) reference for supposed “acceptable” levels. Little is known about the health significance of babies drinking in UV filters through their mothers’ milk.

In a statement to the media, the scientists noted that information on the relationship between the exposure of human populations to ingredients in cosmetics and sunscreens and the presence of these constituents in the human body has been sorely limited. And before the new Swiss research findings, the data on UV filters being present inside the human body was virtually non-existent.

“This study once again emphasizes the importance of global research on the impact of contaminants in the human environment and the need for continuous critical assessment of our priorities in environmental health and consumer habits. I am sure that this investigation will also spark debate at the upcoming first Environmental Health conference in Brazil, February 2011″, Gert-Jan Geraeds, Executive Publisher of Chemosphere said in a press statement.

For more information:

Learn more: http://www.naturalnews.com/030725_sunscreen_chemicals.html#ixzz186NPgfPf

Posted in UV News | Leave a Comment »