This book examines the contemporary role of vitamins in human biology and medicine, particularly in light of renewed interest in high-dose therapeutic applications. The text reviews 'megavitamin therapy,' exploring its use as a therapeutic agent with doses far exceeding recommended allowances, with a specific focus on vitamin entry into the central nervous system. It also addresses central nervous system manifestations of thiamin deficiency and the clinical toxicity associated with vitamin supplementation.

This book offers a focused examination of vitamin therapy, particularly the controversial practice of megavitamin therapy, and its implications for human biology and medicine. The content highlights recent trends in administering high doses of vitamins for therapeutic purposes, alongside discussions on deficiency-related neurological issues and the potential dangers of excessive supplementation. The work appears to be a specialized text, likely aimed at professionals or students in the fields of medicine and biology seeking detailed information on these specific topics. The inclusion of contributions from different specialists suggests a multi-faceted approach to understanding vitamin's complex role.