aim: what nutrients make up a healthy diet? do now: “the chemical factory” worksheet hw:...
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Aim: What nutrients make up a healthy diet?Do Now: “The chemical factory” worksheet
HW: Nutrition/Chemistry index cards Due Wed 11/12.
QUIZ Wed 11/12 on These notes &Video- ‘Forks over Knives’
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How do we know how much energy is in a nutrient?
By the number of calories
How do we know how much energy is in a nutrient?
By the number of calories
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Calories: measures the energy stored in food
How many calories should you eat a day?
Active Teenagers:Males – 2,500 Calories
Females- 2,200 Calories
Calories
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Calorie
• In general, the more calories a food product contains, the more energy it can release.
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Types of NutrientsTypes of Nutrients
• Nutrients: Substances in food that are needed for energy, growth and repair.
• Examples:
–Carbohydrates–Fats–Proteins–Vitamins and Minerals–Water
ALL MUST BE PRESENT IN YOUR DIET !
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Carbohydrates
• Main source of energy
• Ex. Bread, pasta, potatoes, rice
Fiber: found in fruits, vegetables and grains Fiber helps intestinal muscles to keep food and wastes moving along.
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Fats (Lipids)
• Energy Source
• Provides the most energy• Needed for cell membranes, nervous
system, insulation (fat)
• Types: Saturated & Unsaturated.• Saturated fats increase your chance of
getting heart disease
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Proteins
• Used to make hormones and enzymes. Proteins can also be used to build and repair body parts.
• Ex. Meat, eggs, beans, nuts.
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Vitamins
• Nutrients the body needs in SMALL amounts.
• Molecules that aide in chemical reactions
• Ex: Vitamin A and Vitamin D
Vitamin D
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Minerals
• Substances required for the body to function normally.
Ex: Iron and calcium
hemoglobin
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Water• The most important of all!!!
• All of the body processes and chemical reactions take place in water.
• Has no nutritional value and you gives no energy
Over Over half half of your body weight is water. of your body weight is water. Women 50%Women 50%Men 60%Men 60%
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http://ed.ted.com/lessons/sugar-hiding-in-plain-sight-robert-lustig
Sugar: Hiding in Plain Sight
The science of spiciness