“Microbiome in Health and Disease: Gut Microbial Mechanisms, Metabolic Interfaces, and Therapeutic Modulation Across Obesity, Diabetes, Liver Disease, and Pregnancy” is a hardcover academic volume that explores its subject in depth, the work of Prof. A. S. Sarika. Each chapter builds on the last, guiding readers from fundamentals through to more advanced material. Aimed at students, researchers, and academic readers, it is published by Khushbu Publications, New Delhi, India, and released in 2026.