This new book provides informative coverage of recent breakthroughs in vitamins and their ability to prevent disease, manage health issues, and treat chronic illness. It describes the beneficial effects of vitamins as nutraceuticals in treating cancer, for improving the immunity of patients with HIV and AIDS, for the treatment of tuberculosis, and for the management of infectious diseases, such as viral infections, microbial infections, and COVID-19. The functional activity of vitamins in brain health and obesity management is also explored for the management, prevention, and delay of hypertension and related problems. The volume also covers vitamins that play a role in neurodegenerative diseases as well as those that can be used for weight loss and obesity, blindness and vision issues, baldness, and skincare issues. Describes the effects of vitamins as nutraceuticals in chronic diseases, such as in treating cancer through antitumor and antioxidant activity, for improving the immunity of patients with HIV and AIDS, for the treatment of tuberculosis, for peptic ulcers, for infectious diseases (including COVID-19), etc.