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New guidelines from the international Endocrine Society recommend people aged 75 and over should consider taking vitamin D supplements.
But why is vitamin D so important for older adults? And how much should they take?
Young people get most vitamin D from the sun.
In Australia, it is possible for most people under 75 to get enough vitamin D from the sun throughout the year. For those who live in the top half of Australia – and for all of us during summer – we only need to have skin exposed to the sun for a few minutes on most days.