In the past five years, a surprising and intense resurgence in interest in vitamins and other micronutrients and their role in health and dis ease has occurred. The recognition has emerged that vitamins not only are essential for life .in that severe nutritional deficiencies occur in their absence, but that these compounds may also serve as natural inhibitors of cancer. Synthetic alterations of the basic vitamin A mole cule have also resulted in the production of compounds that are more potent as anticancer agents than the natural substance and may have substantial therapeutic activity as...

In the past five years, a surprising and intense resurgence in interest in vitamins and other micronutrients and their role in health and dis- ease has occurred. The recognition has emerged that vitamins not only are essential for life -in that severe nutritional deficiencies occur in their absence, but that these compounds may also serve as natural inhibitors of cancer. Synthetic alterations of the basic vitamin A mole- cule have also resulted in the production of compounds that are more potent as anticancer agents than the natural substance and may have substantial therapeutic activity as...