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Is vitamin D really a cure-all – and how should we get our fix?
Evidence is growing that the ‘sunshine vitamin’ helps protect against a wide range of conditions including cancers
Vitamin D is having quite a moment. In the past few months, evidence has been growing that the “sunshine vitamin” not only has an important role in bone and muscle health, but might also help prevent a range of cancers, reduce the chance of developing rheumatoid arthritis, protect against multiple sclerosis and cut the risk of colds and flu.
Vitamin D is not one chemical, but a label that covers a group of substances, including vitamin D2 and D3. The latter is the form made when sunlight hits your skin and is also found in other animals. Non-animal sources such as fungi and yeasts primarily produce the D2 form. Once in the body, these substances are converted into biologically active steroids that circulate in the blood.
Martin Hewison, professor of molecular endocrinology at the University of Birmingham, who carried out the recent study into vitamin D and rheumatoid arthritis, said evidence from cell studies backs up the idea that the vitamin is important. “In most of the models, vitamin D appears to have quite a positive effect,” he said. “If you are using cancer cell lines or cancer cells, vitamin D has anti-cancer effects, and likewise in cells that have been used for models for infection and immune disorders, vitamin D has quite clear antibacterial and anti-inflammatory effects.” But when it comes to studies in humans, the picture is far from clear-cut.
Retrieved from https://www.theguardian.com/science/2018/mar/09/is-vitamin-d-really-a-cure-all-and-how-should-we-get-our-fix Access 07/20/2018
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