Background Vitamin D is important for bone health; in 2014 it was the fifth most commonly
ordered laboratory test among Medicare Part B payments. Objectives The aim of this study …

Methods Data analyzed in this study were collected through National Health and Nutrition
Examination Survey (NHANES), specifically from a population of 4962 participants, age≥ …

Concerns about vitamin D status in the United States have resurfaced due to increasing
reports of insufficiency and deficiency. Few foods contain vitamin D naturally, and currently …

Context Vitamin D deficiency is considered a global public health issue, even in low-latitude
countries where there is abundant sunlight radiation. Nevertheless, the prevalence of …

Background-Vitamin D deficiency is a global health problem, but little is known about the
vitamin D status of Canadians.//Data and methods-The data are from the 2007 to 2009 …

Background: Temporal trends in the US population's vitamin D status have been uncertain
because of nonstandardized serum 25-hydroxyvitamin D [25 (OH) D] measurements …

Background: The 2011 Dietary Reference Intakes (DRIs) for vitamin D use 25-
hydroxyvitamin D [25 (OH) D] concentrations to define vitamin D deficiency (< 30 nmol/L) …

Background: Controversy exists over the disparate circulating 25-hydroxyvitamin D [25 (OH)
D] concentrations between black and white Americans. Objective: We sought to determine …

Background: Vitamin D deficiency or insufficiency has been observed among populations in
the northern United States. However, data on the prevalence of vitamin D deficiency in areas …

Mounting evidence suggests that vitamin D deficiency could be linked to several chronic
diseases, including cardiovascular disease and cancer. The purpose of this study was to …