Retinol, beta-carotene and cancer.

@article{Wald1987RetinolBA,
  title={Retinol, beta-carotene and cancer.},
  author={Nicholas J Wald},
  journal={Cancer surveys},
  year={1987},
  volume={6 4},
  pages={635-51}
}
Evidence from epidemiological dietary studies does not demonstrate an association between retinol intake and the risk of cancer in developed countries. There is, however, an inverse association between beta-carotene intake and the risk of cancer. Evidence from prospective biochemical epidemiological studies demonstrates that low serum retinol is associated with a high risk of cancer but only within about the first three years, indicating that it is probably a metabolic consequence of cancer. A… CONTINUE READING

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