Effect of vitamin D supplementation on non-skeletal disorders: a systematic review of meta-analyses and randomised trials

Publication date: Available online 5 November 2017 Source:The Lancet Diabetes & Endocrinology Author(s): Philippe Autier, Patrick Mullie, Alina Macacu, Miruna Dragomir, Magali Boniol, Kim Coppens, Cécile Pizot, Mathieu Boniol Randomised trials reported up to Dec 31, 2012, did not confirm that vitamin D supplementation could protect from non-skeletal health conditions affecting adults, as was expected on the basis of data from observational studies. To examine whether the more recently published meta-analyses and trials would change past conclusions, we systematically reviewed meta-analyses of vitamin D supplementation and non-skeletal disorders published between Jan 1, 2013, and May 31, 2017, that included study participants of all ages, including pregnant women. We also searched for randomised trials not included in meta-analyses. We identified 87 meta-analyses, of which 52 were excluded because they contained less recent literature or were of suboptimal quality. We retrieved 202 articles on trials that were not included in meta-analyses. Recent meta-analyses reinforce the finding that 10–20 μg per day of vitamin D can reduce all-cause mortality and cancer mortality in middle-aged and older people. Although vitamin D doses were greater than those assessed in the past, we found no new evidence that supplementation could have an effect on most non-skeletal conditions, including cardiovascular disease, adiposity, glucose metabolism, mood disorders, muscula...
Source: The Lancet Diabetes and Endocrinology - Category: Endocrinology Source Type: research