Nutraceuticals are complex mixtures of biologically active substances, used since a long time as food supplements and alternative medicine system in preventing diseases and improving the quality of life. This book will be useful to those who apply it to modify their lifestyles, as well as to the growing nutrition, food science, and natural product community. The conclusions and recommendations from the various chapters will provide a basis for change in dietary habits and focus on the growing body of knowledge on the role of various dietary plants in reducing many chronic and degenerative diseases, such as Cancer, Alzheimer, Parkinson and heart disease initiation. Most of the expert reviews define and support the actions of phytochemicals, antioxidants, and similar materials that are part of dietary vegetables, fruits, grains, and dietary supplements.