Meeting requirements for vitamin A.

@article{West2000MeetingRF,
  title={Meeting requirements for vitamin A.},
  author={Clive E. West},
  journal={Nutrition reviews},
  year={2000},
  volume={58 11},
  pages={341-5}
}
When the intake of foods or pharmaceutical preparations containing sufficient nutrients of adequate bioavailability are consumed, nutrient requirements are met and optimal nutritional status is maintained. Recent studies have shown that the basis for describing vitamin A activity of carotenoids overestimates the bioavailability of provitamin A carotenoids and their bioconversion to retinol (vitamin A). It is therefore proposed that instead of 6 microg from a mixed diet, 21 microg beta-carotene… CONTINUE READING

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A global clinical view on vitamin A and carotenoids.

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