"This new book volume, Plant Secondary Metabolites for Human Health: Extraction of Bioactive Compounds, deals with recent advanced research in the medical and nutrition sciences, natural products, and health-promoting foods that work to reduce the risk of diseases while enhancing overall well-being. Plant-based functional foods are known to contain compounds (also referred to as phytochemicals) in the leaves, stems, flowers, and fruits that help to promote human health. These plant products are drawing attention of researchers because of their demonstrated beneficial effects against disease, particularly diabetes, hypertension, cancer, neurodegenerative diseases, among others. The medicinal and nutritional use of plant secondary metabolites is a hot topic and has been receiving extensive attention from both health professionals and the public. The book covers these main areas: Part 1: Extraction of Bioactive Compounds from Plants discusses the concept of functional foods, available sources, biochemistry, structural composition, different biological activities for better health, and vitality of bioactive compounds in cell signaling and biological assays. Part 2: Plant-Based Drugs looks at plant products, their health-promoting potential, and natural remedies for lifestyle diseases. It also examines the special properties of Eugenia uniflora: its physical characteristics, traditional and nutritional uses and importance, distribution, and more. This section also discusses plant biotechnological interventions for bioacitve secondary metabolites, epigenetics, and functional foods. Functional foods, beyond providing the basic nutrition, may offer a potentially positive effect on health by acting as epigenetic modulators that cure various disease conditions. Part 3: Innovative Use of Plant Based Drugs for Human Health examines the therapeutic activities of natural resources as xylitol and aldose reductase inhibitors, which are found to be beneficial in the treatment of dia