Three reports in February 2017 on vitamin D:

Vitamin D supplements may reduce the risk of acute respiratory infections.  Queen Mary University of London say their findings "support the introduction of public health measures such as food fortification to improve vitamin D status in settings where profound vitamin D deficiency is common."

Birmingham University report that increasing active vitamin D can help to optimise muscle strength in humans.

And finally, a report finds that low level vitamin D during remission contributes to relapse in ulcerative colitis patients.


The NHS says, “Good food sources are:

  • oily fish – such as salmon, sardines, herring and mackerel
  • red meat
  • liver
  • egg yolks
  • fortified foods such as most fat spreads and some breakfast cereals

Another source of vitamin D is dietary supplements.

In the UK, cows' milk is generally not a good source of vitamin D because it isn't fortified, as it is in some other countries.”