Microalgae and One Health: Fundamentals, Biocompounds, and Health and Environmental Applications provides a novel compendium of the interdisciplinary applications of microalgae. Adverse global changes, including climate change, environmental pollution, urbanization, globalization, industrialization, and food insecurity are imminent threats to global health as they accelerate damage to humanity, wildlife, and the biosphere. The One Health concept asserts that these contemporary challenges are entwined in the interdependence of humans, animals, and our shared environment. This book examines the use of microalgae in human and animal nutrition, healthcare, and novel technologies applied to sustainable environmental processes. Written by a globally diverse network of experts, this book is systematically structured to illustrate the applications of microalgae. The first section of the book covers the fundamentals of microalgae, from chemistry to industry applications. The next section further examines microalgae chemistry and identifies bioactive compounds. Subsequent sections examine the utility of microalgae in One Health, from human therapeutic potential to animal health and sustainability. The book concludes with a comprehensive market analysis, regulatory discussion, and safety considerations associated with microalgae products.