“Microbiome in Health and Disease: Mechanisms, Host Interactions, and Therapeutic Frontiers Across Gut and Extraintestinal Disorders” offers a thorough, well-structured treatment of its subject in depth, the work of Dr. C. Manikandan. The book pairs rigorous scholarship with a readable style suited to both study and reference. Aimed at students, researchers, and academic readers, it is published by Khushbu Publications, New Delhi, India, and released in 2026.