Our horses, like us humans, are affected by so-called civilization or lifestyle diseases. Due to improper housing, lack of exercise, excessive training demands, unsuitable and overly energy-rich feeding, and especially stress, metabolic processes can become imbalanced, leading to illness in the horse. This book addresses the most common metabolic disorders in horses. It describes the causes, symptoms, and treatment options for metabolic acidosis, Equine Metabolic Syndrome (EMS), Kryptopyrroluria (KPU), Equine Cushing Syndrome (ECS), laminitis, and others. The authors present alternative treatment options while considering the biochemical processes in the organism. In addition to conventional medical therapy, orthomolecular therapy and herbal or mushroom medicine are utilized here, along with their effects and necessity.