Vitamins True/False
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vitamin A supplements can help treat acne
False. Vitamin A supplements have no effect on acne.
A b vitamin often forms part of the enzyme's active site, where a chemical reaction takes place
True
Most water-soluble vitamins are not stored in tissues to any great extent.
True
Vitamin D functions as a hormone to help maintain bone integrity
True
Vitamin K is necessary for the synthesis of key bone proteins
True
The FDA has extensive regulatory control over supplement sales
False
The theory that vitamin C prevents or cures colds is well supported by research
False