News
Low blood vitamin D concentration may increase mortality risk
17 October 2012
Low levels of vitamin D are associated with increased mortality in older African American and Caucasian adults, says a new US study.
15 January 2010
Daily supplements combining vitamin D and calcium may protect everyone from fracture, regardless of age or gender, says a new study.
According to the results of a pooled analysis including almost 70,000 people in the US and Europe, a combination of vitamin D (10 micrograms) and calcium significantly reduced fractures by 8 percent, and hip fractures by 16 percent (1). The combination of supplements benefited both women and men of all ages. Trials which used only vitamin D at a dose of 10 or 20 micrograms showed no significant reductions in fracture risk.
The study supports a growing consensus that combined calcium and vitamin D is more effective than vitamin D alone in reducing a variety of fractures, the researchers commented. Now, they want to investigate the best dosage, duration and optimal way for people to take it.
17 October 2012
Low levels of vitamin D are associated with increased mortality in older African American and Caucasian adults, says a new US study.
20 January 2009
According to a U.S. survey, individuals with low vitamin D blood levels have a higher risk of nose and throat infections. In a secondary analysis of the Third National Health and Nutrition Examination Survey (NHANES), a survey of the U.S. population, found that individuals with low blood levels of a vitamin D marker (25-hydroxyvitamin D) were also more likely to have an upper respiratory tract infection (URTI). Specifically, the analysis found that compared to those with levels greater than 30 nanograms/milliliter (ng/ml), individuals with less than 10 ng/mL had a 36% higher risk of having a recent URTI; those with 10–<30 ng/mL had a 24% higher risk (1). In recent years, vitamin D deficiency has reemerged, resulting in the resurfacing of diseases such as rickets in children. According to the Dietary Guidelines for Americans 2005, “Older adults, people with dark skin, and people exposed to insufficient ultraviolet band radiation (i.e., sunlight) should consume extra vitamin D from vitamin D-fortified foods and/or supplements.” The researchers commented that the evidence supporting the benefits of vitamin D continues to build. Given that vitamin D levels are relatively low in most foods and there are serious risks associated with excessive sun exposure, dietary supplements can be an effective alternative for achieving a sufficient intake. However, this study on its own does not mean that higher vitamin D intake will ensure prevention of upper respiratory tract infection. 1.Ginde A. et al. Association Between Serum 25-Hydroxyvitamin D Level and Upper Respiratory Tract Infection in the Third National Health and Nutrition Examination Survey. Archives of Internal Medicine, 2009; 169 (4):384–390.
30 March 2016
In 2009, the French Research Centre for the Study and Monitoring of Living Standards (Centre de Recherche pour l’Étude et l’Observation des Conditions de Vie, CRÉDOC) conducted a survey assessing the nutrition habits of over 400 French consumers.