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Nutrients Substances the body needs to… regulate body functions repair body tissues promote growth d foo f to obtain energy k o sy in a h e t r e ’s fo w it en l,” ing h e t u a W f e “ s e a r . a o ly e o p w t s im at n s h o t as t e e r g r or e f h ot Most nutrients come from the food we eat. Common Analogy The body is like a high-performance race car. Food is like fuel. The body (car) needs high quality food (fuel) to keep it running its best. Unfortunately, there are serious problems with this overly-simplified analogy. Classes of Nutrients MACRONUTRIENTS Carbohydrates Proteins Fats Water PROVIDE ENERGY Vitamins Minerals MICRONUTRIENTS DO NOT PROVIDE ENERGY Calorie Energy from food Equals the amount of energy needed to raise a liter of water by one degree Celsius The chemical process by which the body breaks down food to release energy (Calories) is called metabolism. Energy Content Trick Question: How many calories per gram are there in water, vitamins, and minerals?
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