Nutrition and Dietetics** is the science of food, nutrients, and their impact on health and disease. It involves:  

Nutrition: Studying how the body uses nutrients for growth, metabolism, and overall well-being.  

Dietetics: Applying nutrition knowledge to plan diets for individuals or groups, managing medical conditions (like diabetes or obesity), and promoting healthy eating.  

Professionals in this field work in healthcare, sports, public health, and food industries to improve dietary habits and prevent nutrition-related diseases.