This new book deals with recent advanced research on 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 of certain plants. These plant products are drawing the 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. This book presents new information on the extraction of bioactive compounds from plants, plant-based drugs, and the innovative use of plant-based drugs for human health.