1. Nutrition
Ch. 15 Sect 1.

2. Energy & Nutrients
Food provides your body with energy and nutrients it needs to survive.
The digestive system processes food and releases energy that is used for cellular processes and activities.
Calorie- the amount of energy it takes to raise the temperature of 1 kg of water by 1°C.
Weight, age, activity level, and gender determines the amount of energy a person needs.
Nutrients- substances that provide energy & materials for cell development, growth and repair.

3. Groups of Nutrients

4. Proteins & Carbohydrates
Protein- large molecule that is made of amino acids and contains carbon, hydrogen, oxygen, nitrogen, and sulfur (sometimes). Relays signals between cells, disease protection, cell support, & speeding up chemical reactions.
Carbohydrates – molecules made of carbon, hydrogen, and oxygen. Major source of energy. 3 Forms: Starches, sugars, and fibers.

5. Fats, Vitamins, Minerals, & Water
Fats are lipids, provide energy, and help absorb vitamins. Major part of cell membrane.
Vitamins- needed for growth, regulation of body functions, and prevention of diseases.
Minerals – inorganic nutrients (No Carbon) that help the body regulate many chemical reactions.
Water needed for chemical reactions.

7. Healthful Eating Nutritious foods come from major food groups.
A balanced diet includes carbohydrates, proteins, fat, vitamins, minerals, and water.
Food labels help you determine the amount of each nutrient group in that food.