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Women may have a higher risk of having breast cancers spread through their bodies if they are deficient in vitamin D, a Canadian study has shown.
Women who had a vitamin D deficiency when diagnosed with breast cancer were 94 per cent more likely to have their cancer metastasise and 73 per cent more likely to die within 10 years.
Separately, an Auckland University researcher, Robert Scragg, has said many Kiwis get too little vitamin D, with Maori, Pacific and South Asian peoples the worst off.
