"This book comprehensively reviews the diverse role of phytochemicals in promoting human health and combating diseases. The initial chapters introduce phytochemicals, navigate the natural health landscape, and provide a foundational understanding of these bioactive compounds. The book unfolds the role of phytochemicals as a formidable defense against oxidative stress and presents the unique health impacts and nutritional significance of phytochemicals from fruit peels. The chapters further discuss the therapeutic potential of phytochemicals in combating multi-drug-resistant bacterial infections and modulating pathways in inflammation and cancer. It highlights the treatment strategies for amyloidosis using natural products and the intriguing connection between natural compounds and biogenic nanoparticles in polycystic ovarian syndrome (PCOS). The book in turn explores the effects of plant-derived compounds on cancer stem cells and recent advances in ethanopharmacology for age-related brain disorders"--