Discover the comprehensive world of vitamin D with the “Handbook of Vitamin D in Human Health.” This essential guide, optimized for “The Bookish Owl,” delves into the prevention, treatment, and toxicity of vitamin D, a crucial nutrient for overall well-being. Explore its expanded roles beyond bone and muscle health, including its impact on arthritis, infant growth, chronic diseases, and even infectious diseases like HIV/AIDS and tuberculosis. Understand vitamin D’s mechanisms in immune modulation and inflammation, and its connection to cancer prevention through sunlight exposure. Authored by leading researchers, this handbook provides vital insights for clinicians, supplement users, and policymakers seeking to harness the benefits of vitamin D while mitigating potential risks. A must-read for anyone interested in human health and nutritional science.