Food = energy you need to study, stay active, and hang out with friends. Too little food =poor growth, malnutrition, weight loss. Too much food =obesity, diseases and disorders. Mouth Stomach Small Intestine Waste Blood Stream (nutrients) nationalgeographic.com/science/health-and-humanbody/human-body/digestive-system-article/ Nutrients-the substances found in food that your body needs to function properly. Diet-a pattern of eating (how much, how often, and what you eat). Metabolism-turning nutrients into useable energy. 6 factors that affect your food choices: *personal taste *family traditions *convenience of food *overall cost of food *food your friends eat *availability of food in your area What are some reasons we eat?