This book summarizes the reported health benefits of bioactive factors in cereal foods and their potential underlying mechanisms. Focusing on potential mechanisms that contribute to the various effects of bioactive factors on obesity, diabetes and other metabolic diseases, it helps to clarify several dilemmas and encourages further investigations in this field. Intended to promote the consumption of cereal foods or whole cereal foods to reduce the risk of chronic diseases, and to improve daily dietary nutrition in the near future, the book was mainly written for researchers and graduate students in the fields of nutrition, food science and molecular biology.