Nutritional science is the study of how food and nutrients affect human health and well-being. This field encompasses a wide range of disciplines, including biochemistry, physiology, epidemiology, and psychology, among others. Researchers in this field investigate the role of nutrients in preventing and treating various diseases, as well as how dietary patterns impact overall health and longevity. Nutritional science also focuses on the development of dietary guidelines and interventions to promote healthier eating habits and reduce the prevalence of chronic diseases such as obesity, diabetes, and heart disease. Overall, nutritional science plays a crucial role in understanding the complex relationship between diet and health and informing public health policies and recommendations.