Book excerpt: In response to the recent upsurge of interest in the therapeutic potential of medicinal plants, with their promising phenolic compounds, this new book offers an important overview of advances in the applications of flavonoids for health. The book explores the nutritional and pharmacological properties of polyphenols and flavonoids, including their ability to prevent the start and development of diseases and how they aid in the management of several chronic pathological illnesses, including cancer, diabetes, cardiovascular disease, neuro-degenerative illness and aging, pregnancy-induced disorders, and others. Also discussed in depth are the properties, classes, and degrees that formulate a phenolic compound and which subsequently supports the development of drugs/products with health benefits.