Vitamins True/False

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