This book provides valuable coverage on various immunomodulatory research associated with nutraceutical studies, from plant to animal and marine sources. The book focuses on the various properties of nutraceutical and functional foods, from dietary fibers to fungus, marine sources, ginseng, and several others. Its content is also dedicated to the nutraceutical potential and applications of these modulators. The first section of this book focuses mainly on the recent developments in nutraceutical and functional food associated with various immunomodulators. The next section covers the micronutrients and macronutrients level in order to share important data and help readers gain a basic understanding of the techno-functional, nutraceutical potential and applications of nutritional treatment under specific disease conditions. A detailed overview providing the structural and functional properties related to immunomodulators will be highly beneficial for academics and advanced-level students in immunology, food science, clinical medicine, and life sciences.