Vitamin D

Impact of vitamin D status on statin-induced myopathy

[https://www.sciencedirect.com/science/article/pii/S2214623716300503 by Krista D. Riche Pharm.D. a b, Justin Arnall Pharm.D.,Kristin Rieser Pharm. Honey E. East M.D. d Daniel M. Riche Pharm.D., FCCP, BCPS, CDE, ASH-CHC, CLS 12/2016 Journal of Clinical & Translational Endocrinology]

There is a multitude of evidence supporting the benefit of statin use in cardiovascular disease; however, statin-induced myopathy is a major reason for statin discontinuation and non-adherence. Vitamin D deficiency has been independently associated with muscle weakness and severe myopathy, and may be a confounder for statin-induced myopathies. Since there is no consensus on a treatment course of action for statin-induced myopathy, investigation into potential confounders to elucidate the dynamics of statin-induced myopathy is warranted.

A dose of vitamin D history

by nature structural & molecular biology 2/22

Our bodies are capable of producing vitamin D — we are not entirely dependent on obtaining it from food, as is the case with other 'true' vitamins. In fact, we can produce enough vitamin D to maintain essential processes when our skin is adequately exposed to the ultraviolet rays in sunlight.

Vitamin D deficiency 2.0: an update on the current status worldwide

by Karin Amrein 20/1/20 nature

Vitamin D testing and the use of vitamin D supplements have increased substantially in recent years. Currently, the role of vitamin D supplementation, and the optimal vitamin D dose and status, is a subject of debate, because large interventional studies have been unable to show a clear benefit (in mostly vitamin D replete populations).

Official recommendations for vitamin D through the life stages in developed countries

by Samantha M. Kimball 20/8/20 EJCN

Inadequate vitamin D nutritional status is prevalent worldwide and has been associated with autoimmune disorders, heart disease, deadly cancers, insulin resistance, inflammation, neurological disorders, adverse outcomes in pregnancy, and increased risk for mortality. Expert recommendations for vitamin D intake differ between governmental agencies and practice guidelines from medical societies due to differences in the definition of vitamin D deficiency, insufficiency and sufficiency based on serum 25-hydroxyvitamin D [25(OH)D] concentrations.

Making vitamin D detection much more accessible

by nature research custom media nature portfolio

Despite the importance of vitamin D for overall health, it is estimated that about one billion people worldwide have a deficiency, usually defined as having serum levels of 25-hydroxyvitamin D3 (25(OH)D3) — the major circulating form of vitamin D — below 20 nanograms per millilitre (ng/ml).

Vitamin D supplementation vs. placebo and incident type 2 diabetes in an ancillary study of the randomized Vitamin D and Omega-3 Trial

by Deirdre K. Tobias 8/4/25 nature communications

Observational and experimental evidence suggests that vitamin D plays a role in type 2 diabetes (T2D). However, prior randomized supplementation trials are limited to high-risk patients with prediabetes. Here we aim to evaluate whether vitamin D supplementation reduces risk of T2D in a general population of older US adults.

Vitamin D metabolites and the gut microbiome in older men

by Robert L. Thomas 26/11/20 nature communications

The vitamin D receptor is highly expressed in the gastrointestinal tract where it transacts gene expression. With current limited understanding of the interactions between the gut microbiome and vitamin D, we conduct a cross-sectional analysis of 567 older men quantifying serum vitamin D metabolites using LC-MSMS and defining stool sub-Operational Taxonomic Units from16S ribosomal RNA gene sequencing data.

New aspects of vitamin D metabolism and action — addressing the skin as source and target

by Daniel Bikle 6/2/20 nature reviews

Vitamin D has a key role in stimulating calcium absorption from the gut and promoting skeletal health, as well as many other important physiological functions. Vitamin D is produced in the skin. It is subsequently metabolized to its hormonally active form, 1,25-dihydroxyvitamin D (1,25(OH)2D), by the 1-hydroxylase and catabolized by the 24-hydroxylase. In this Review, we pay special attention to the effect of mutations in these enzymes and their clinical manifestations.

Vitamin D testing: advantages and limits of the current assays

by Barbara Altieri 6/1/20 EJCN

Vitamin D deficiency and insufficiency has become a pandemic health problem with a consequent increase of requests for determining circulating levels of 25-hydroxyvitamin D [25(OH)D]. However, the analytical performance of these immunoassays, including radioimmunoassay and ELISA, is highly variable, and even mass spectrometric methods, which nowadays serves as the gold standard for the quantitatively determination of 25(OH)D, do not necessarily produce comparable results, creating limitations for the definition of normal vitamin D status ranges.

The Vitamin D Connection to Pediatric Infections and Immune Function

by Valencia P Walker 5/09 Pediatric RESEARCH

Over the past 20 y, a resurgence in vitamin D deficiency and nutritional rickets has been reported throughout the world, including the United States. Inadequate serum vitamin D concentrations have also been associated with complications from other health problems, including tuberculosis, cancer (prostate, breast, and colon), multiple sclerosis, and diabetes.

Exploring vitamin D metabolism and function in cancer

by Sang-Min Jeon 16/4/18 EMM

Vitamin D, traditionally known as an essential nutrient, is a precursor of a potent steroid hormone that regulates a broad spectrum of physiological processes. In addition to its classical roles in bone metabolism, epidemiological, preclinical, and cellular research during the last decades, it revealed that vitamin D may play a key role in the prevention and treatment of many extra-skeletal diseases such as cancer.