Natural products play an important role in pharmacotherapy, particularly in the treatment of infectious diseases and cancer. These products originate from fungi, animals and plants. These products, which include oils, fruits, nuts, whole grains and vegetables, contain modest levels of bioactive compounds, which have therapeutic potential and health-promoting properties. Major categories of bioactive compounds comprise tannins, lycopene, lignin, indoles, resveratrol, and alkaloids. Extensive researches have been conducted for exploring the therapeutic potential of bioactive compounds in heart disease, cancer, diabetes, and cardiovascular diseases. Various natural bioactive compounds are fast catching are being researched for their anti-cancer properties. They have been found to have a chemopreventive effect by altering pro-inflammatory gene expression. This book aims to shed light on some of the unexplored aspects of bioactive compounds and their use in the treatment and management of cancer. It is appropriate for students seeking detailed information in this area as well as for experts.