Supplementation by the general public with vitamin D at doses above the Tolerable Upper
Level of Intake (UL) is becoming quite common. The objective of the current analysis was to …

Unlike vitamin D recommendations by the Institute of Medicine, the Clinical Practice
Guidelines by the Endocrine Society acknowledge body weight differentials and recommend …

Context More than 3% of adults report vitamin D intakes of 4000 IU/day or more, but the
safety of this practice is unknown. Objective The objective of this work is to establish whether …

This study was conducted to examine the effect of calcium intake on the rise in serum 25-
hydroxyvitamin D [25 (OH) D] levels in response to supplemental vitamin D3. Fifty-two …

Background Indirect evidence suggests that optimal vitamin D status is achieved with a
serum 25-hydroxyvitamin D [25 (OH) D] concentration> 75 nmol/L. Objective We aimed to …

Background: Reports on the dose response to vitamin D are conflicting, and most data were
derived from white men and women. Objective: The objective was to determine the response …

Context: Serum 25-hydroxyvitamin D (25OHD) is lower in women with darker skin color. Is it
due to lower skin production, lower absorption, or different metabolism of vitamin D …

ABSTRACT Background: The Food and Nutrition Board of the National Academy of
Sciences states that 95 μg vitamin D/d is the lowest observed adverse effect level (LOAEL) …

Objective: Vitamin D supplementation may be required for certain subgroups in the United
States in whom status and intake are inadequate, but the impact of various doses, and …

The Institutes of Medicine (IOM) recently revised the recommended dietary allowances
(RDA) for vitamin D, to maintain serum 25-hydroxyvitamin D (25 (OH) D) at or above 50 …