• Publications
  • Influence
Vitamin D supplementation, 25-hydroxyvitamin D concentrations, and safety.
  • R. Vieth
  • Medicine
  • The American journal of clinical nutrition
  • 1 May 1999
For adults, the 5-microg (200 IU) vitamin D recommended dietary allowance may prevent osteomalacia in the absence of sunlight, but more is needed to help prevent osteoporosis and secondaryExpand
  • 1,416
  • 62
Estimates of optimal vitamin D status
Vitamin D has captured attention as an important determinant of bone health, but there is no common definition of optimal vitamin D status. Herein, we address the question: What is the optimalExpand
  • 1,803
  • 47
  • PDF
Risk assessment for vitamin D.
The objective of this review was to apply the risk assessment methodology used by the Food and Nutrition Board (FNB) to derive a revised safe Tolerable Upper Intake Level (UL) for vitamin D. New dataExpand
  • 804
  • 30
Effect of vitamin D replacement on musculoskeletal parameters in school children: a randomized controlled trial.
BACKGROUND Despite the high prevalence of hypovitaminosis D in children and adolescents worldwide, the impact of vitamin D deficiency on skeletal health is unclear. METHODS One hundred seventy-nineExpand
  • 335
  • 20
  • PDF
Comparison of vitamin D2 and vitamin D3 supplementation in raising serum 25-hydroxyvitamin D status: a systematic review and meta-analysis123
Background: Currently, there is a lack of clarity in the literature as to whether there is a definitive difference between the effects of vitamins D2 and D3 in the raising of serum 25-hydroxyvitaminExpand
  • 422
  • 19
  • PDF
Epidemic influenza and vitamin D.
In 1981, R. Edgar Hope-Simpson proposed that a 'seasonal stimulus' intimately associated with solar radiation explained the remarkable seasonality of epidemic influenza. Solar radiation triggersExpand
  • 770
  • 17
  • PDF
The urgent need to recommend an intake of vitamin D that is effective.
This editorial makes the point that there is now strong evidence that increasing vitamin D intake will lower risk of falling and lower fracture risk in older men and women. There is also strongExpand
  • 687
  • 17
  • PDF
A phase I/II dose-escalation trial of vitamin D3 and calcium in multiple sclerosis
Objective: Low vitamin D status has been associated with multiple sclerosis (MS) prevalence and risk, but the therapeutic potential of vitamin D in established MS has not been explored. Our aim wasExpand
  • 260
  • 17
  • PDF
Age-related changes in the 25-hydroxyvitamin D versus parathyroid hormone relationship suggest a different reason why older adults require more vitamin D.
Vitamin D requirements are thought to vary with age, but there is little comparative evidence for this. One goal in establishing a vitamin D requirement is to avoid secondary hyperparathyroidism. WeExpand
  • 410
  • 15
  • PDF
Evidence that vitamin D3 increases serum 25-hydroxyvitamin D more efficiently than does vitamin D2.
In all species tested, except humans, biological differences between vitamins D2 and D3 are accepted as fact. To test the presumption of equivalence in humans, we compared the ability of equal molarExpand
  • 616
  • 14