By Tim Spector in The Conversation.
We are still in love with vitamins a century after they were discovered, with half the US and UK population taking a supplement. Vitamin D – the sunshine vitamin – is the favourite and is believed to have the most proven benefits. Governments, including the UK government, have said that the evidence for vitamin D’s health benefits is so overwhelming that every adult should take it as a supplement for at least six months of the year.
It was first used to cure rickets in Victorian children living in urban poverty and is now routinely given to prevent and treat brittle bone disease (osteoporosis) and fractures. It has been associated with a reduced risk of over a hundred common diseases in observational studies, ranging from depression to cancer.
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