Introduction and Key Elements of Food Food is a basic need for survival, energy, growth, and health. However, it is a cultural, social, and emotional experience that goes beyond nourishing the body. 1. The Core Purpose of Food Nutrition and Energy: Food provides the body with the main nutrients (carbohydrates, protein, fat, vitamins, and minerals) it needs, and provides the energy it needs for daily activities. Growth and Repair: Nutrients such as protein help repair and grow cells in the bo