Nutrigenomics is the application of the sciences of genomics, transcriptomics, proteomics and metabolomics to human nutrition, especially the relationship between nutrition and health.

Nutri-genomics is the science of the interaction been gene expression and diet. Food can influence your genes, and your genes influence the food that's best for you.

Nutrition and health research is focused on the prevention of disease by optimizing and maintaining cellular, tissue, organ and whole-body homeostasis. This requires understanding, and ultimately regulating, a multitude of nutrient-related interactions at the gene, protein and metabolic levels. These new disciplines and their attendant technologies are changing the paradigms of health research.

Nutrigenomics is associated with the issue of personalized nutrition, since claims are being made that differences in genotype should result in differences in the diet and health relationship.