source: http://www.nutraingredients.com/Product-Categories/Vitamins-premixes/Vitamin-D-levels-not-enough-for-winter-Study
Current recommended intake for vitamin D during winter months and need to be at increased by five, says a new study from California.
Recommended intakes for people with darker skins should be increased to a whopping 2100 to 3100 International Units per day all year-round, up from the current adequate intakes set at 5 micrograms per day (200 International Units).
Researchers from University of California, Davis report their findings in the Journal of Nutrition. The study, led by Laura Hill, represents the latest in a long line of studies calling for increases in the recommended levels for vitamin D.
Concerns are growing over the health implications of living with insufficient and deficient vitamin D levels. A recent study from China reported that 94 per cent of people aged between 50 and 70 enrolled in the study were vitamin D deficient or insufficient, which may increase their risk of metabolic syndrome.
...While our bodies do manufacture vitamin D on exposure to sunshine, the levels in some northern countries are so weak during the winter months that our body makes no vitamin D at all, meaning that dietary supplements and fortified foods are seen by many as the best way to boost intakes of vitamin D.
Read rest of article here http://www.nutraingredients.com/Product-Categories/Vitamins-premixes/Vitamin-D-levels-not-enough-for-winter-Study
Source: Journal of Nutrition
Published online ahead of print, doi: 10.3945/jn.109.115253
"Vitamin D Intake Needed to Maintain Target Serum 25-Hydroxyvitamin D Concentrations in Participants with Low Sun Exposure and Dark Skin Pigmentation Is Substantially Higher Than Current Recommendations"
Authors: L.M. Hall, M.G. Kimlin, P.A. Aronov, B.D. Hammock, J.R. Slusser, L.R. Woodhouse, C.B. Stephensen

Overview
However, I realize for many other people across the U.S. that Thanksgiving means a “free for all” at the dinner table. A chance to dig into creamy soufflés, devour turkey and stuffing, sip mouth-watering wine and polish off the food frenzy with more desserts than an Italian Viennese Hour. Forget the 4 a.m. Black Friday wake-up call in favor of nursing a food hangover and vowing you’ll never eat that much again.
seconds (i.e. ankle circles, and calf stretches).


Walking is easy and fun!
Don't let the hot weather keep you from working out!
The winter months are prime time for colds and the flu. I’ve heard people say they’d rather be sick during the winter then in the summer. I’d rather not be sick at all! Having previously worked at the CDC (Center for Disease Control), with constant reminders to engage in healthy behaviors, I’m well aware of how to keep my immune system healthy so I never get sick – regardless of what time of year it is.
younger to older adults is not associated with a corresponding increase in serum 25(OH)D concentrations. (Most multivitamins only have 200-400IU). In general, leaner individuals have higher circulating concentrations of 25(OH)D and vitamin d supplement use than do heavier individuals. Finally, non-Hispanic whites tend to have higher vitamin D status than do non-Hispanic blacks and Mexican Americans.

.png)

