- Beta-carotene alone may not be as useful as mixed carotenoids (and other healthful substances) found in fruits and vegetables.
- Synthetic beta-carotene may be less effective than natural beta-carotene.
- The participants in these studies were the wrong group of people (generally, smokers).
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- Reviewer: EBSCO CAM Review Board
- Review Date: 09/2014 -
- Update Date: 09/18/2014 -