This new volume provides an authoritative and comprehensive overview of the field of nutraceuticals and genomics—also called nutrigenomics, a rapidly growing field. It discusses both nutrigenomic and nutrigenetic techniques to investigate the nutritional basis of several health disorders because scientists have found that diet can affect gene expression. The book covers the nutrigenomic tools for the prevention of disease conditions such as cancer, viral infection, microbial infection, COVID-19, HIV/AIDS, tuberculosis, hypertension, neurodegenerative disease, obesity, baldness, and anemia. Some nutrigenomic tools that can also be used for brain health, weight loss, human nutrition, skin care, and maintaining health during pregnancy are also explored.