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African Americans, 25-hydroxyvitamin D, and osteoporosis: a paradox -- Aloia 88 (2): 545S -- American Journal of Clinical Nutrition
African Americans, 25-hydroxyvitamin D, and osteoporosis: a paradox.
Aloia JF.
Am J Clin Nutr. 2008 Aug;88(2):545S-550S. Review.
PMID: 18689399
African Americans have lower serum 25-hydroxyvitamin D concentrations and a lower risk of fragility fractures than do other populations. I review the evidence on factors other than vitamin D that might explain this paradox and the calcium economy in different life stages.
Evo and Proud: African Americans and vitamin D
"It's well known that African Americans have low levels of vitamin D in their blood. In fact, this seems to be generally true for humans of tropical origin. In a study from Hawaii, vitamin D status was assessed in healthy, visibly tanned young adults who averaged 22.4 hours per week of unprotected sun exposure. Yet 51% had levels below the current recommended minimum of 75 nmol/L (Binkley et al., 2007). In a study from south India, levels below 50 nmol/L were found in 44% of the men and 70% of the women. The subjects are described as "agricultural workers starting their day at 0800 and working outdoors until 1700 with their face, chest, back, legs, arms, and forearms exposed to sunlight" (Harinarayan et al., 2007). In a study from Saudi Arabia, levels below 25 nmol/L were found in respectively 35%, 45%, 53%, and 50% of normal male university students of Saudi, Jordanian, Egyptian, and other origins (Sedrani, 1984)."
Vitamin D: In the evolution of human skin colour - ScienceDirect - Medical Hypotheses
Vitamin D: In the evolution of human skin colour.
Yuen AW, Jablonski NG.
Med Hypotheses. 2009 Aug 28. [Epub ahead of print]
PMID: 19717244
Is more sun the answer to low vitamin D? | Wellcome Trust
A study of Caucasian female twins prompts researchers to ask if public health advice to avoid the sun could be causing low vitamin D levels.
Research produced by the Department of Twin Research and Genetic Epidemiology, King's College London, has shown that vitamin D levels are lower in fair-skinned Caucasian women than in Caucasian women with darker skin type.
...
"It will be very interesting to see the results of the genetic analysis that the authors propose - especially of polymorphisms [genetic variants] in D binding protein. Variants in this protein associate strongly with skin colour, and also with vitamin D status, so may end up being explanatory.
Color & Design Blog / Colorful Beauty in Nature: Butterflies by COLOURlovers
A Collection of 18 Beautiful Butterflies & Their Color Palettes
HTML Color Names
The table below provides a list of the color names that are supported by all major browsers.\n\nNote: If you want your pages to validate with an HTML or a CSS validator, W3C has listed 16 color names that you can use: aqua, black, blue, fuchsia, gray, gre
Bridgestone's 13-inch color e-paper display handles pen input, has the future written all over it
While it'll always be difficult to accept innovative technology from a company that makes our tires, there's just no faulting Bridgestone's work in the e-paper space, or their latest color entry, above. The 13-inch display, based on "QR-LPD" tech, has what looks to be great color depth, along with snappy 0.8 second screen refreshes (great for this screen size) and actual Wacom-based pen input. There's video of it in action after the break, and if we didn't know better we'd think they were putting a Sharpie to a perfectly good display. Unfortunately, the image does look a little dim at the moment, so hopefully that's something Bridgestone can improve upon as they approach commercialization -- whenever that might b
PPM Files
PPM is the portable pixel map format. It is a simple RGB color image description.
Dr. Dobb's | Trusting Wikipedia | elokuu 6, 2007
A new program that color-codes an entry's individual phrases based on contributors' past performance may add some degree of trust.
Kuler Dashboard Widget at Alex Jones
Adobe has released a Dashboard widget for Kuler, it’s beautiful, and very useful Web-based color picking app. The widget consumes RSS feeds from the site to display the most downloaded, highest rated and newest color schemes. In addition to the abiliy t
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