What is Nutrition?

-Nutrition is the study of how your body uses the food that you eat.

What is a nutrient?

-A nutrient is a chemical substance in food that helps maintain the body.  Some provide energy.  All help build cells and tissues, regulate bodily processes such as breathing.  No single food supplies all the nutirents the body needs to function. 

Nutrients are divided into six main categories:


What is a calorie?

-A calorie is a unit of measure for energy in food. 

Nutrients that have calories:


Calories per gram:

Protein         1g=4cal
Carb              1g=4cal
Fat                 1g=9cal


Proteins help your body build new cells and mend cells.  Protein is made up of amino acids.


Carbohydrates are the bodys main source of energy.  Carbs supply fiber for good digestion.  Carbohydrates are made of the chemicals carbon, hydrogen, and oxygen.  There are three types of carbs- sugar, starches, and


Fats supply essential fatty acids.  They also supply energy.  Fat also gives flavor to food.


Vitamins help speed up the chemical process in your body.  They are either fat-soluble or water-soluble.  Fat-soluble only mix with fat.  These are vitamins A,D,E, and K.  Water-soluble only mix with water.  These are vitamins B and C. 


Minerals are chemicals that occur in nautre, such as rocks, soil, and water.  Minerals are divided into macrominerals and trace minerals.

The amount of nutrients your body needs depends on a variety of variables.  These include age, gender, activity level, health, and state of nutrition.