Millions of dollars wasted on vitamin D supplements

Australians are spending huge sums of money on vitamin D supplements that may be unnecessary and ineffective, researchers from NSW show.

Purchases of vitamin D supplements have increased threefold in the past decade, with consumers spending $165 million a year in 2010 on products containing vitamin D alone or in combination with calcium, a study of market research data has found.

However, researchers from Westmead Hospital in Sydney said many supplements contained inadequate doses of

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