Current evidence does not support vitamin D supplements to prevent disease in general

https://www.eurekalert.org/pub_releases/2016-11/b-ced112216.php

Public Release: 23-Nov-2016
Current evidence does not support vitamin D supplements to prevent disease
BMJ

Current evidence does not support the use of vitamin D supplements to prevent disease, conclude researchers in The BMJ today.

Associate Professor Mark Bolland and colleagues at the University of Auckland, New Zealand and the University of Aberdeen, Scotland say those at high risk of vitamin D deficiency should be advised about sunlight exposure and diet and offered low dose supplements, but the rest of us should focus on eating a healthy balanced diet with food containing vitamin D and getting regular short bursts of sunshine.

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During spring and summer, most people get enough vitamin D from sunlight on their skin and their diet. But in autumn and winter, when exposure to sunshine is minimal, the only source is from a limited range of foods such as oily fish, egg yolk, red meat, liver, fortified breakfast cereals and fat spreads.

As such, Public Health England advises that everyone should consider a 10 microgram daily vitamin D supplement of during these months.

Based on a comprehensive search of published evidence, Associate Professor Bolland and colleagues make the case that existing clinical trials show that vitamin D supplementation does not improve musculoskeletal outcomes, such as falls or fractures.

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