Nutrigenomics examines how diet influences gene expression, determining how specific foods and nutrients activate or suppress genes that affect health. For example, polyphenols in berries can influence genes involved in inflammation, potentially reducing the risk of chronic diseases. This field helps personalize dietary recommendations based on genetic profiles, allowing for proactive health measures. By understanding the influence of nutrition on gene expression, nutrigenomics provides insights into managing conditions like obesity, diabetes, and cardiovascular disease through tailored diets. As research advances, nutrigenomics holds promise for disease prevention by enabling dietary choices that align with an individual's genetic makeup, promoting health resilience and potentially extending lifespan.