Critique of the considerations for establishing the tolerable upper intake level for vitamin D: critical need for revision upwards.

@article{Vieth2006CritiqueOT,
  title={Critique of the considerations for establishing the tolerable upper intake level for vitamin D: critical need for revision upwards.},
  author={Reinhold Vieth},
  journal={The Journal of nutrition},
  year={2006},
  volume={136 4},
  pages={1117-22}
}
The tolerable upper intake level (UL) for vitamin D is 50 mcg/d (2000 iu/d) in North America and in Europe. In the United Kingdom a guidance level exists for vitamin D, 25 mcg/d (1000 iu/d), defined as the dose "of vitamins and minerals that potentially susceptible individuals could take daily on a life-long basis, without medical supervision in reasonable safety." Exposure of skin to sunshine can safely provide an adult with vitamin D in an amount equivalent to an oral dose of 250 mcg/d. The… CONTINUE READING

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