What’s new is the idea that vitamin D is not just about bones. It’s also known that even a moderate lack of vitamin D can boost the risk of fractures. Most people are familiar with the idea that extreme vitamin D deficiency causes rickets, a softening of the bones that can bow and distort them. That is still good advice, but the latest research suggests that sunshine – or rather the vitamin D it generates – may be more essential for health than we previously recognised. Yet the standard health advice tells us to cover up and slather on the suncream for fear of developing skin cancer. On the first sunny, warm day following winter, pale-skinned denizens of the high latitudes slough off excess clothing and expose their blanched bodies to the sun’s rays. IT IS an annual ritual, as reliable as the spawning of frogs or the return of migrating birds.
But how do you know if you’re getting enough? The sun’s rays are even more essential to health than we thought.
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