This single-source reference draws together the current knowledge of
the vitamins' biological properties in the context of human nutrition.
Vitamins are co-enzymes, antioxidants or precursors of hormones and are
therefore involved in a great many biochemical and physiological
processes. They play a vital role in the maintenance of health, and
there is evidence that dietary sources of vitamins have beneficial
effects in the prevention of heart-related diseases, bone diseases and
possibly cancer